Swipe for more images

Men's Caribou Thermoplus® Boot Liner


http://www.sorel.com/mens-caribou-thermoplus-boot-liner-NM8001.html NM8001
Style # 1063681
$21.90 $30.00
| Reviewers rated this product: True to Size


Product Actions

Add to cart options
Add to Wishlist

The Construction



Men's Size Chart

7 6 40 25
7.5 6.5 40.5 25.5
8 7 41 26
8.5 7.5 41.5 26.5
9 8 42 27
9.5 8.5 42.5 27.5
10 9 43 28
10.5 9.5 43.5 28.5
11 10 44 29
11.5 10.5 44.5 29.5
12 11 45 30
12.5 11.5 45.5 30.5
13 12 46 31
14 13 47 32
15 14 48 33
16 15 49 34
17 16 50 35

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.


Men's Caribou Thermoplus® Boot Liner is rated 4.4 out of 5 by 47.
Rated 5 out of 5 by from 40 Year old SOREL boots still great! Last year after 40 yrs, my Husband was planning on purchasing a new pair of snow boots. We realized we could just buy new inserts for the 40 plus yr. old SORELS. I tried to order late in season and to no avail...this year I realized what we forgot to do: ORDER INSERTS! so I got on line and they were here IN DAYS...great fit AND NOW AFTER A LITTLE CLEANING UP HE HAS NEW BOOTS! great SERVICE AND TERRIFIC QUALITY...Thank you SOREL!
Date published: 2015-01-15
Rated 5 out of 5 by from Worth every penny. I bought caribou liners in the same size as my boot, and they fit like a glove. They weren't exact replacements for the blue booties in my 18 year old boots, but I can cut them down to fit just right. My feet are toasty warm once again.
Date published: 2014-02-17
Rated 4 out of 5 by from boot liners these are much better than my old ones, you lacked a variety of styles but they are good for my boots:
Date published: 2014-02-15
Rated 5 out of 5 by from Quality and service My Husband has owned Sorel boots for many years the linings were worn but the boots remain in excellent condition. I ordered two pairs of liners the process was so easy and they were here within two weeks. I was so impressed with the ease of doing business I ordered myself new liners for my Sorel boots
Date published: 2014-01-18
Rated 3 out of 5 by from Great quality The insert is awesome. The only problem is that it is not the correct hight for the boots that I purchased them for.
Date published: 2014-01-07
Rated 5 out of 5 by from Last option My husband has a pair of OLD work boots that he refuses to part with (they must be obsolete because we just can't find the boots or inserts for them any more). He asked for new inserts for Christmas and I was ready to call it quits when I found the Sorel web site. I was amazed to not only find the exact insert that he wanted, but it was also in stock! I ordered them and found the check-out procedure very easy. I received them in less than a week. When my husband tried them in his old boots (size 10) they fit perfectly still leaving room for thick socks. When my husband is ready to part with those old boots, we will definately look at Sorel boots first (and probably the only site). Thank you Sorel for making my experience so easy.
Date published: 2014-01-01
Rated 5 out of 5 by from Perfect fit These liners fit an older pair of Sorels perfectly, and seem a little more rugged than the original felt liners.
Date published: 2013-12-30
Rated 4 out of 5 by from nice and warm just got these recently to replace some old liners that I have had for about 20 years. the new ones fit perfectly in my old boots. they are a bit thicker than the old ones so I will not be using heavy socks any longer. they seem very warm and comfortable. I mainly use them for hunting, snowmobiling, and working around the yard. it has been a cold winter so far(about -10 to +15f) and the liners keep my feet very warm. thank you.
Date published: 2013-12-22
Rated 5 out of 5 by from Sorel boot liners Great purchasing experience. They had exactly what I needed (not available elsewhere) and it shipped within a few days. Thanks!
Date published: 2013-12-18
Rated 3 out of 5 by from Good product, but: The inserts are great, but I wish they had elastic on the front to make them easier to get on,.
Date published: 2013-11-15
Rated 5 out of 5 by from Happy feet I have a medical condition that makes it hard to keep my feet warm.I purchased two pairs of Caribou 9MM ThermoPlus innerboot liners. My feet are warm and comfortable in then. I use one pair as slippers and one pair for sleeping. Great product
Date published: 2013-03-14
Rated 5 out of 5 by from liners good fit good quality
Date published: 2013-02-19
Rated 3 out of 5 by from replaceing boot liners I'm a bit perplexed as to what to do. After replaceing my boot liners, they seem to be thicker then the originals, making them so TIGHT I can barely get my foot in them. They are actually so tight, I don't think I'll be able to wear them as is. And it cost me 40 bucks. YUCK
Date published: 2013-02-12
Rated 5 out of 5 by from Sorel Boot Liner Excellent product...well made, nice and warm.
Date published: 2013-02-03
Rated 5 out of 5 by from Old boots, new warmth The Sorel Caribou boots that I bought almost 20 years ago look great and still have a lot of tread life left, but the liner was worn past thin to holes. These new liners fit perfectly and have brought back warmth to my feet in these boots. My only "complaint" was that I could not find the liners with the white tops like my old ones. This is a small issue and I am happy with these new liners.
Date published: 2013-02-01
Rated 5 out of 5 by from 30 years of dry, warm feet I bought my Sorel Caribou's 30 years ago. Over the years, I used mink oil on the leather tops and they have served me well. With the mild winters we have been having, I put them in the closet for the last few years. When I needed them this year, I found bugs had eaten my liners. So I was so happy to find I could pop on line, buy new liners and be back in the snow within days. I've shared this story with my friends and found they all have Sorel boots too.
Date published: 2013-01-31
Rated 4 out of 5 by from New life for old boots I have a pair of Sorels from the 1980's. The liners were shot, these new ones fit perfect and I have a nice "new" pair now.
Date published: 2013-01-28
Rated 5 out of 5 by from Caribou liner. Excellent replacement liner. The fit is a little close in width as it seems these are now being made offshore but I think they will stretch out enough. I ordered a size larger to accommodate this. Still snug but they'll stretch with use.
Date published: 2013-01-25
Rated 5 out of 5 by from Wonderful product Great fit, my feet are warm once again! Sorel poducts are very well made. The only product I will buy for my family.
Date published: 2013-01-25
Rated 1 out of 5 by from This product does not fit. The boot liners don't fit. They are not made the same as the original Sorel liners. I can't get them on my feet even outside the boot. I can't recommend these boot liners. I am returning the liners for the second time. The representative that I spoke with explained that this is a common complaint with the boot liners. It has cost me $17.00 to return the liners (twice) because they won't fit. Thank you
Date published: 2013-01-16
Rated 4 out of 5 by from This liner has a fundamental flaw. The material and workmanship are high quality. The liners, however, are stitched all the way to the top, making them very difficult to get on. All the Sorel liners I've worn in the past were open in the front, with just one strap (halfway up the liner) holding the two halves together. When I called Sorel and asked the rep about it, she said they did that to prevent snow and slush from entering the liner. I've never had that problem before, since the pac itself has a tongue. I've found that I can get the liners on more easily if I don't wear socks. The only other option I can think of is to cut the stitching about halfway down the liner.
Date published: 2013-01-04
Rated 5 out of 5 by from Ordering and sizing I didn't have the size of my husband's boot (worn off) but the boot liners were true to size that I guessed by comparing them with a size 12 he had, and a size 11. They are quality (thick) and came in a timely manner. We're very pleased with them!
Date published: 2013-01-02
Rated 5 out of 5 by from Awesome boot liner My husband has had his sorels for over 20 years, the lining had fallen apart years ago. He was thrilled when I found these great liners that would give his sorels new life--truly as good as new. He was so excited, he bought me my first pair of Sorels. So amazing to find a product that could last nearly a lifetime, with replacement parts still available from the company. Thank you, Sorel.
Date published: 2012-12-27
Rated 5 out of 5 by from Sorel PAC boot insert These size 9 inserts are actually better than the original boot insert. All around better material and construction. Would like to see the front seam with Velcro to allow easy foot insert and then cover over inner lace area. Would like to see sorel make a higher 18+ in tall lace leather top rubber bottom boot and use the regular insert. Along with a sole of thread in removable (golf shoe spikes) design for ice. Cost no object!
Date published: 2012-12-26
Rated 5 out of 5 by from Good fit and price These fit perfectly in the Caribou boots I recently purchased at the Goodwill. Warm and dry in the Colorado snow.
Date published: 2012-12-25
Rated 5 out of 5 by from Excellent Liner - Very warm and keeps your feet dry I bought them for a pair of Air Force cold weather mukluks that had the old felt/wool liners that wore out. These are so much warmer and thicker and feel better on my feet. I got to use them two weeks ago after our big snow storm to snow blow the sidewalks and my feet were toasty warm when I was done.
Date published: 2012-12-18
Rated 5 out of 5 by from Perfect Inserts I work in the Bakken Oilfields in North Dakota where temperatures can reach -30 degrees. I needed a new liner and my boot manufacturer did not have replacements. I bought these Caribou Thermoplus liners and they fit great. They are a little snug across the top when inserting the foot due to the neopreme, but my feet are warm and dry. Great product for the price and very quick shipping. I will definitely do business again.
Date published: 2012-12-03
Rated 2 out of 5 by from Hard to get in/out of there should be more elastic on the neak of the liner. The foot bead is sized fine. I can hardly get my foot in or out of these liners without a struggle.
Date published: 2012-11-29
Rated 3 out of 5 by from Caribou Thermoplus Boot Liner I was disappointed that they do not have a collar which I find helps keep snow out - the original did. ALos, they seem a bit snugger than the original liners - I'm hoping they'll stretch out a bit.
Date published: 2012-11-20
Rated 5 out of 5 by from Men's Caribou Thermoplus Liner My husband was unable to find boot liners after checking several stores and we found exactly what he wanted on your website. He is very pleased with the quality of this item and would highly reccomend it to others.
Date published: 2012-02-27
Rated 4 out of 5 by from Great once they are on - also - sold in pairs The original boot liners are slit from the front of the ankle to the top. The new ones have a neoprene insert which is not flexible enough to allow my foot to slide into the liner. I had to slit the neoprene to match the slit in the originals. Once I did that, they worked great - very comfy and warm with easy entry and exit. Also - the web site makes it appear as if they are sold singly, so I ordered 2. It turns out the quoted price gets you a pair of liners.
Date published: 2012-02-23
Rated 1 out of 5 by from Really disappointed Returned this item as it was so poorly made. The stitching was so weak my husband could put his finger in the spaces between stitches, He loves his Sorel boots, but if these liners continue to be sold, Sorel is going to get a bad reputation instead of the excellent one it now has.
Date published: 2012-02-21
Rated 5 out of 5 by from Works better the original I couldn't find the liner for my boots (made by another manufactor) so I turned to Sorel. Size 10, fit perfect, better the OEM part. The seams and heel area are of a higher fit and finish. Highly pleased.
Date published: 2012-02-14
Rated 5 out of 5 by from was as advertised We're happy with this product, HOWEVER....we're hoping it will stretch to allow easier foot access.....the top is tight. There really should be more ease at the top...esp. for older people. I have to help Pop put them on, but I do think with time it will be easier. Meanwhile, once on he is most pleased...says they are very comfy...loves them whilst out tending to the goats, toes are toasty. and all is well. I will keep you posted on durability.
Date published: 2012-02-05
Rated 5 out of 5 by from Perfect fit I have a 15 yr old pair of Sorel boots & this style is not made anymore. I took a chance ordering this liner, by looks alone & comparing to my old worn out liners. They fit perfectly in my boots, it's like they are new, again.
Date published: 2012-01-30
Rated 5 out of 5 by from replacement liners I needed replacement liners for my 20 plus year old Caribou boots, which are still in very good condition. The telephone representative was very helpful, courteous, and professional. I could no longer read the size on either the boots or liners as the writing had worn off completely. They arrived sooner than promised and fit well. Since we were not able to know for sure which size I needed, she offered to waive the shipping cost. As I'm sure you have found true for years, this "loss" can be considered marketing monies well spent as I will speak well of Sorel and continue to do business with you for years to come. Thank you!
Date published: 2012-01-21
Rated 4 out of 5 by from Sorel Liner Have not had a chance to wear the boots yet, but the liners fit my old Mark V's well.
Date published: 2012-01-20
Rated 4 out of 5 by from Sorel Boots and Liners Our entire family just loves Sorel boots. Recently, we had to purchase new liners for my husbands boots that he has had for 18 years now! They are still in great condition, just had to get new liners! How many things can you say you've had for 18 years and all you had to do was replace one thing to make it brand new again. Thanks Sorel for being such a great company and making quality boots.
Date published: 2012-01-12
Rated 5 out of 5 by from Best of the Best This is my 4th set of liners in 15 yrs. The leather outers refuse to wear out. My first Green top Sorels were bought in 70' and lasted 25 yrs. Thanks for a fine product....Ian
Date published: 2012-01-06
Rated 5 out of 5 by from good The new liners fit my old boots very well eve though they were different models. Your salesman said they would. Thank you.
Date published: 2012-01-02
Rated 5 out of 5 by from Caribou Thermoplus Liners The liners that I recently purchased for my 40 year old Sorel boots fit true to size and were shipped to me within a few days of my order. I think that it is pretty amazing to own and use any product for 40 years and I've used them ice fishing and on outdoor construction projects in Wisconsin winters. The liners I just bought will help me enjoy my Sorel boots for years to come. Thanks for being so dependable!
Date published: 2011-12-31
Rated 5 out of 5 by from Mens caribou thermoplus liner I called about the liners for an older pair of boots they found the right one and it was on the way got right away. The liner fits fine and works in my boots thanks Sorel
Date published: 2011-12-29
Rated 5 out of 5 by from Liners My husband has had the same pair of Sorel boots for longer than I've known him (over 26 years). Finally he decided to replace the liner and we ordered this pair. They work perfectly and will ensure he has another 26 years in those boots.
Date published: 2011-12-27
Rated 5 out of 5 by from A good upgrade! I bought this liner to replace the original pair in my Sorel's. These are warmer than the original ones and they fit well in my boots! I am looking forward to the -20 temperatures this winter!
Date published: 2011-12-22
Rated 5 out of 5 by from These are great for old Sorel boots I read many reviews on this site complaining the liners did not fit older boots properly. This pair fits older Sorels like a glove. My Sorels are about 25 years old! These liners are as thick as my last pair, but I'm unsure if they are as thick as the originals since I've replaced them many times over. $30 is still cheaper than buying new boots so why not reuse?
Date published: 2011-12-20
Rated 5 out of 5 by from Great Product My boots are like new again and my feet are warm
Date published: 2011-12-07
Rated 3 out of 5 by from doesn't fit my older Sorel boots properly have an older pair of size 12 Sorel boots, with size 12 liners. Ordered these liners in a size 12 and they are too big. They are longer than the original liner, and I will be sending them back. Other than the issue of not being true-to-size, they are a nice liner and I will try to order the next half size down.
Date published: 2011-10-17
  • y_2017, m_8, d_21, h_15
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_47
  • loc_en_US, sid_NM8001, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_sorel