Swipe for more images

Women's Caribou Thermoplus® Boot Liner + Snow Cuff


https://www.sorel.com/womens-caribou-thermoplus-boot-liner-snow-cuff-NL8040.html NL8040
Style # 1063692
$19.98 $35.00


Product Actions

Add to cart options
Add to Wishlist

The Construction



Women's Size Chart

5 3 36 22
5.5 3.5 36.5 22.5
6 4 37 23
6.5 4.5 37.5 23.5
7 5 38 24
7.5 5.5 38.5 24.5
8 6 39 25
8.5 6.5 39.5 25.5
9 7 40 26
9.5 7.5 40.5 26.5
10 8 41 27
10.5 8.5 41.5 27.5
11 9 42 28
12 10 43 29

How to Measure Your Foot

  • Place your feet flat on a piece of paper and mark your longest toe and the back of your foot. It's best to do this standing and wearing socks
  • Measure the length (cm) straight from your longest toe to the back of your foot using a ruler or measuring tape.
  • Use the chart to find your size.


Women's Caribou Thermoplus® Boot Liner + Snow Cuff is rated 3.7 out of 5 by 82.
Rated 5 out of 5 by from CARIBOU 9MM THERMOPLUS BOOT Inserts: A+! These cozy, soft thermoplus boot inserts are the best! I constantly have cold feet, but with these inserts my feet stay soft, warm, & dry. They fit like a glove in my boots. I feel so comfortable in them. They have the feel of cotton slippers, not like being in boots at all. I would definitely buy from SOREL again! These are the best inserts I have ever bought. You have found a loyal & happy customer in Vermont, USA!
Date published: 2018-02-14
Rated 1 out of 5 by from Way to small I order these liners per the size stated on the boots I own. They are no where near the right size. Without socks on my toes were squished at the end of the liner. Very disappointed, why make a liner that isn’t correct?
Date published: 2018-02-11
Rated 5 out of 5 by from WOMEN'S CARIBOU THERMOPLUS BOOT LINER + SNOW CUFF Even though the caribou thermoplus boot liner with snow cuff was too short for my Joan of Arctic boots, it was true to size and fit perfectly in my boot. I will, however, have to purchase shorter boots in order to use the liners. I've read some reviews on the liners not fitting in the boot, being too narrow, etc. but if you purchase a replacement liner from Sorel for a Sorel boot, they should fit perfect. Just check the size of the boot. It would have been helpful if the height of the liner (in inches/cm) would have been displayed. Even more helpful if a list of boots were displayed with the appropriate boot liner.
Date published: 2018-02-08
Rated 5 out of 5 by from These liners gave my boots new life I have a pair of sorel boots that are over 30 years old made in Canada, with the original liners. The boots have held up wonderfully but the liners were worn down. I purchased new liners and it is like have a new pair of boots. I wear them everyday to get down our very steep icy hill, to get my grandson to the bus stop.
Date published: 2018-01-27
Rated 5 out of 5 by from Great "renewal" I have my Caribous for over 40 years & they are still in great shape. Due to a basement flood last spring, the liners were damaged and had to be discarded. Your replacements are perfect & perfect timing for this winter's cold weather. I am looking forward to snow storms!!! Thank you!
Date published: 2018-01-24
Rated 5 out of 5 by from Perfect Got to replace liner In Grandmothers old boots. They are perfect. They are size 9US and feel perfect for my size 8 foot.
Date published: 2018-01-24
Rated 5 out of 5 by from Needed new liners I needed new liners after mice made a home in my old ones yuck! These fit perfect and are nice and warm!
Date published: 2018-01-20
Rated 1 out of 5 by from Would NOT Recommend I purchased this item on 12/15/17, I received it on 12/21/17 and by 01/03/2018 the stitching had completely ripped around the whole inner edge of my foot. Via the internet I contacted support and the turn around time is days, I have now been told to send the product back (where I have to pay for shipping) and I will have a liner in 2-4 weeks. I sent pictures there is nothing I am hiding. It is a warm 10 degrees in Buffalo, NY currently and I am without winter boots. NOT a happy customer.
Date published: 2018-01-15
Rated 5 out of 5 by from Boot liner Perfect. I heard they might be discontinuing boot liners, sad face. The sale price is awesome and they make my boots feel brand new ❤️
Date published: 2018-01-14
Rated 1 out of 5 by from Sizing Chart Needs Update I measured my wife's feet in accordance with Sorel's sizing chart, assuming it was responsibly developed and accurately reflected the sizes of the liners. I also checked the reviews for sizing advice and found that more than 80% of the reviews I read listed the liners true to size or slightly small. As received the liners were at least 5/8" shorter than the original liners (labeled the same size) and were uncomfortably tight. Because of Sorel's return policy I am now paying shipping both directions to return a product that does not match the description in Sorel's own advertising. I am not likely to purchase anything from Sorel's web store in the future following this experience.
Date published: 2018-01-06
Rated 3 out of 5 by from Size info for liners Size information in case it's helpful to anyone: I bought new felt Caribou liners to replace ancient ones with holes. I had to guess the size because actual measurements are nowhere to be found on this site. Here are the measurements I made: NEW, size women 8 (Eur 39): Bottom length, front-to-back, seam-to-seam: 10-3/8 inches Width at widest point (ball of foot): 4" OLD (I don't know the original boot size): Bottom: 10-5/8" to 10-3/4" (feet have stretched different amounts) Width: 4" Putting the bottoms together the new one is about 1/4 inch shorter. New liner is about 1 inch taller. The new liners are somewhat tighter on my feet, but still hard to get into the boots. I have to put them on my feet to get them into the boots (and have to really pull to get them off). But, I'm not sure I could get larger ones in at all. I hope the new liners will stretch out a bit. I haven't worn these enough for an accurat rating.
Date published: 2018-01-03
Rated 5 out of 5 by from Warm, stylish and comfortable Boot Liner We purchased the Women's Caribou Thermoplus® Boot Liner + Snow Cuff. These boot liners keep our feet dry and comfortable while walking on temperatures below zero "0" degrees in MN. Our Sorel experience has been excellent: from outstanding customer service during the order placement to phenomenal product. This is the best boot liner available in the market today!
Date published: 2017-12-26
Rated 5 out of 5 by from Old can be new I had owned my Caribous for 15 years so it was time to change the liner. So I purchased these and was able to wash and recycle the old liners and turned them into my new cozy house slippers
Date published: 2017-12-24
Rated 3 out of 5 by from Fit may be difficult for high instep The product is of great quality. However, for me, the elastic is along the entire shaft of the liner unlike other liner models where the elastic is just one band across a portion of the shaft. This difference made it more difficult for me to get my foot inside the liner. Note: I bought a size 7.5 when I actually wear a size 8 shoe, so that could have contributed a little bit to my fitting difficulty. I suspect the main culprit is my high instep.
Date published: 2017-12-22
Rated 5 out of 5 by from keeping my feet warm I found and bought a pair of what looked like new women's Sorel Caribou boots in a second hand store, but they didn't have liners. I ordered the Women's Caribou Thermoplus Boot Liner + Snow Cuffs, thankfully they arrived quickly because it started snowing heavily a week or so after. They're keeping my feet warm while I snowshoe and do farm chores in about 8" of snow and 20F temps. The cuffs help keep the snow out of my boots :-) For me, they're a little narrow through the calves but I have very wide ankle/lower calves. They have loosened up after wearing the boots for a few days.
Date published: 2017-12-17
Rated 5 out of 5 by from Best Product ever produced I have been wearing Sorel pack boots for years. I am a burn victim and body temperature is extremely variable. I spend a great deal of time in outdoors during the winter. My feet and hand will turn purple when in the cold temperatures. With the Sorel pack boots I have never experienced cold feet. The boots are very well made, with total longevity. I am sold on Sorel's products.
Date published: 2017-11-22
Rated 5 out of 5 by from new liner perfect fit and easy to change the old with the new
Date published: 2017-06-17
Rated 2 out of 5 by from Poor quality The inside seam is very rough and hurts my toes.
Date published: 2017-01-29
Rated 5 out of 5 by from New Insides!! I purchased the liners for my boots that are 20+ years old. The original have served this long, and the outside shell is still perfect.
Date published: 2017-01-21
Rated 5 out of 5 by from Great boot liner True to size great boot liner
Date published: 2016-12-29
Rated 1 out of 5 by from Not true to size I couldn't even get my foot in this to try it.
Date published: 2016-12-23
Rated 4 out of 5 by from Great quality, design needs work I bought my size 9 Caribou which came with this size 9 boot liner. this is my size with every other shoe, and this size fits me too. When I am wearing these boots, I am usually wearing thick socks. I have lived in northern NY and New England. I wear these 4+ months a year because there is always snow or mush. These are as comfy as a sneaker, and kept my (usually freezing) feet warm in ice rinks, walking the dog, winter carnival, snowshoeing. Sometimes, I would throw in a foot warmer for the long, bitter days outside, so I cheat there. What I really dislike about this insert, is taking them off. The whole insert comes out of the boot when I take them off, which is several times a day. I cannot simply stand up and take them off every time I come in from walking the dog. It is a whole sit-down process. It could be the shape of my foot. I have high arches, and low volume. Still, the pros of warmth and fit outweigh the cons for sure. But I will likely look to a different style liner for Caribou if available. If this is all there is, I will still buy these. comfort, dry, warmth... definitely my priority in a boot and liner.
Date published: 2016-09-08
Rated 2 out of 5 by from Way too small! Bought these to replace the wool liners in my boots, but these are so small, I can't even get my foot in! Not sure what to do because if I go up a size I don't think it will fit in boot.
Date published: 2016-03-14
Rated 3 out of 5 by from in step My boots were purchased at a second hand store with no size marked. I wear a size 8 so I went with that size for my liner. They fit perfectly in the boots. However, I have a very high instep and I was not able to get my foot into the liner. I had to cut the elastic strip down the front to get it on. Now, all is well and I will wear them warmly. The instep problem is why I would not repurchase.
Date published: 2016-01-27
Rated 5 out of 5 by from Great liner Good fit, comfortable. Unfortunately did not work in the boot I was hoping to wear it with but will work with another.
Date published: 2016-01-15
Rated 5 out of 5 by from Liners Perfect thank you! Arrived Fast and fit perfect.
Date published: 2016-01-14
Rated 3 out of 5 by from too tall, not wool I love my old, made-in-Canada Sorel Caribou boots. They are brown and the insert is wool with brown snow cuff. After 18 years, the snow cuff is falling apart, so I ordered these replacements. I am bummed that they are no longer offered in wool, and these new inserts stick up about an inch or two too high. You can see the grey felt sticking out. Wish they offered inserts that were the right height, right color, and made of wool. They are also more narrow than the original insert soles.
Date published: 2016-01-08
Rated 5 out of 5 by from Fit fine I recently received these boot liners. Since it hasn't been cold enough to wear them yet, I can't comment on anything besides fit. I was very hesitant in ordering a size 8, which is my normal size and the size of the boot shell. Most reviews warned that they run very small. However, I did get the 8 and that fit perfectly.
Date published: 2015-11-28
Rated 5 out of 5 by from Keeping my very old boots going These liners are just right. Hopefully they keep my 20 plus year old boots going for another 20 years.
Date published: 2015-02-20
Rated 3 out of 5 by from Just fine Everyone said these ran small so I got a size up and they were a full inch too large, so I returned them. I opted not to get a replacement because the liners I was replacing in the first place were 75% wool and only after receiving this pair did I realize that they are 100% man-made. Had I known this in the first place I probably would've worked harder to just patch up the original liners.
Date published: 2015-02-19
Rated 5 out of 5 by from New Liners I was well over due for some new liners. Very glad I read the reviews. They run extremely small, like everyone states. I orderd an 8 and I wear a 6-1/2. Perfect choice. As long as you are aware of the sizing issue when ordering - you should be good to go. :) Love them!
Date published: 2014-12-10
Rated 5 out of 5 by from Brilliant idea This boot design is brilliant! Warm insert gets wet...slip in a fresh one and you're good to go while the other one dries.
Date published: 2014-12-04
Rated 5 out of 5 by from Caribou Liners Fit a lot tighter than the original liners. My Caribous are about 30 years old and in great shape. I question whether I can wear a sock in them; certainly not a heavy sock. But since the dog ate my original ones I need them. Thanks for the prompt delivery.
Date published: 2014-03-14
Rated 1 out of 5 by from not true to size- These inserts are not at all true to size! Order a size or two larger than your shoe size.
Date published: 2014-03-03
Rated 4 out of 5 by from Boot liner insert i have worn my Sorel's for over 12 years and finally the liner gave out. The new liner is not wool but seems to work well, fit in boot is good and it keeps my feet warm and comfortable. Right now, the liner is tight and will definitely need to be broken in some. The upper front portion of the liner is sewn to the top with an expandable material that most definitely needs to be more expandable or left open completely. Right now, it is a struggle to get foot in boot. Overall, i would rather pay $43 for liners rather that $140 for new boots!
Date published: 2014-02-28
Rated 3 out of 5 by from Thermoplus liner I have an older boot from when Sorel and Eddie Bauer made a boot. The liner didn't work for me. it didn't stay in the book and fit on my foot so tightly that I had a hard time getting it on and off I had to return it. Hoping to find something at works for my boot.
Date published: 2014-02-14
Rated 5 out of 5 by from Caribou boot liners I ordered the Thermoplus Boot Liner+Snow Cuff and received them within a week. They fit my aged Caribou boots perfectly and I have found them comfortable and warm. My old liners were totally worn out; I am so happy to have these replacements!
Date published: 2014-02-13
Rated 2 out of 5 by from Like the old inserts better. I love my Sorel boots! I have had them for 2 years and wear them constantly. Even so, the soles show hardly any wear. The inserts however, were due for replacement. Was very excited to get the new inserts but was disappointed with the fit. The shaft seems to be much more narrow and it clings to my leg and ankle making it impossible to take the boot off without taking the insert with it. And then taking the insert off is another struggle. The foot part fits great and getting them on is not a problem and if I'm not wearing socks, neither is taking them off. But who wears winter boots without socks? Disappointed.
Date published: 2014-02-01
Rated 4 out of 5 by from size is too small The liners are very warm but are not true to size. I had read previous reviews but still ordered the correct size. I wear a size 7 boot and had ordered the size 7 liners. I had to return the size 7 and order the size 8 liners. I received these and they fit better but are still very tight in the calf. I took the advice of others and cut the liners down the center (this is how the old liners were made) which was the only way to get both my foot and the liner in the boot. The company should look at going back to the old style. Saying all this my boots are over 25 years old and are still the warmest things I've ever worn!
Date published: 2014-01-29
Rated 4 out of 5 by from Caribou 9mm Thermoplus Innerboot & Cuff liners Like all of the other comments from people, I too had to cut these liners right down the front. And only then was I able to get my foot into it. Once I got them into the boot they were fine. Nice and warm. I did have to add a velcro strap so it stays closed where I cut the front so the snow won't get into the boot. Otherwise, these are really a great liner.
Date published: 2014-01-28
Rated 4 out of 5 by from small, but warm The overall quality is great. I thought I was ordering a size larger than I needed, but seemed smaller instead. Too small for socks, but feet were still warm while working outside for several hours.
Date published: 2014-01-25
Rated 1 out of 5 by from Too narrow It's much more narrow than the original liner. Makes it hard to have good circulation so instead of keeping the feet warm it makes ones feet more likely to get COLD!
Date published: 2014-01-22
Rated 1 out of 5 by from Where is the wool? My Sorel Caribou boots are about 20 years old. I was extremely dissappointed that I can not buy the real wool inserts just like the original. this used to be the only boot ski lift operators would wear. What happend to this great classic brand??
Date published: 2014-01-19
Rated 4 out of 5 by from Boot liners I bought these liners to replace worn out ones for a pair of Sorrel Caribou boots I was given as a gift about 20 years ago. My original liners were 100 percent wool and I was disappointed that wool liners are no longer available. My original liners were white and the replacements I bought were gray with a white cuff. Unlike my original liners, the elastic which attaches the front edges of the liner goes all the way up the liner in stead of just on the bottom. This made it challenging to get the liner on and off my foot. It took some effort to get the liner in the boot but it fits perfectly. It has definitely been more challenging to get my feet in and out of my Sorrels with the new liners but it becomes easier each subsequent time. The boots are comfortable once on and have been used on several hikes since I got the new liners.
Date published: 2014-01-15
Rated 4 out of 5 by from Great replacement for an old boot liner! I ordered this liner to replace an old boot liner which had been left in the boot in damp conditions to mold & mildew. I was delighted to find this "perfect-fit" liner which I ordered in the same size (Women 6) my old boot liner was. Because it is a snug fit (slighty smaller than true size) placing a heavy sock in it would not work. But the liner is warm enough that I have been comfortable with a light weight wool or cotton sock. The snow cuff protects nicely from deep snow getting down in the boot. To install the liner I placed my foot in the liner & then as if it were a sock... shoved it into the boot. Worked well as it is a snug fit!
Date published: 2014-01-04
Rated 5 out of 5 by from tight fit these replacement liners are a very tight fit but I recall having the same issue when I originally bought the boots but that as I wore them it became easier to get off and on as the liner shaped to my foot. I am hoping it will be a quick adjustment with these replacements
Date published: 2014-01-02
Rated 5 out of 5 by from Women's Caribou Boot Liner + Snow Cuff I bought a pair a men's size 7 Caribou's 25 years ago. I tried to purchase a men's size 7 liner, but they were out of stock, so I purchased a women's size 9. They are excellent! They fit nicely on my feet and in the boot. The new liner is structured a little differently from the original liner with the front elastic going all the way up to the snow cuff. I had to snip it about 3 inches so I could take the boots off. Otherwise, great liner!
Date published: 2014-01-01
Rated 5 out of 5 by from Sorel footware Sorel products have been keeping my feet warm for nearly 35 years. I used to work in the building trades and winters in the Midwest were miserable until I was introduced to Sorel "pack boots". I would change the felt liner and my socks at lunch time and have worked outside in temperatures as low as -11 F. It's been my pleasure to introduce others to the best solution for cold feet and just purchased my wife a pair of Caribou boots with extra liners. My local vendor is Fin & Feather in Iowa City and they are knowledgeable and honest. When I inquired about ordering an extra pair of felt liners they told me that they could do that but that it would be less expensive for me to order directly from Sorel. I appreciate that kind of honesty and that's why I always buy from Fin & Feather.
Date published: 2013-12-30
Rated 4 out of 5 by from Replacement Liner for 25 year old Sorel Boots The liners are well constructed. The front of the liner has an elastic like expanding panel. It does not expand enough to get your foot into the liner in the boot. I cut the panel lengthwise down to the felt so that it would expand, the original liners had an elastic band that expanded more than the replacement liners. Sorel should return to this design. Over all I am satisfied with the product.
Date published: 2013-12-28
Rated 5 out of 5 by from great boots I have had my sorrels for a number of years and decided to replace the liners. WOW, that was the best decision I made. They were easy to get into the boot and they were true to size. If your thinking about it do it.
Date published: 2013-12-26
  • y_2018, m_3, d_16, h_20
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.7
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_82
  • loc_en_US, sid_NL8040, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_sorel