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Alpinestars Thermal Tech Socks

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Alpinestars Thermal Tech Socks

Designed specifically for riding using a warming, breathable and moisture-wicking knit fabric to provide comfort inside Alpinestars boots.

The sole of the socks is combined with Nostatex fibers to provide antibacterial properties and to dissipate heat evenly throughout the sole to provide overall comfort


  • Warm and breathable moisture wicking knit fabric
  • Nostatex , silver yarn, sole for wicking moisture away from skin and giving an anti-bacterial, non odor, layer which conducts heat uniformly around the skin surface to reduce hot-spots
  • Ribbed design reduces bunching at the heel and ankle and increases riding comfort
  • Knee length design for ultimate coverage and comfort

Alpinestars Men's Footwear Size Chart:

Use this chart for Euro-sized footwear
EU Size USA Size
36 3.5
37 4
38 5
39 6
40 6.5
41 7.5
42 8
43 9
44 9.5
45 10.5
46 11.5
47 12
48 12.5
49 13.5
50 14
Use this chart for USA-sized footwear
USASize  EU Size
5 36
5.5 37
6 37.5
6.5 38
7 38.5
7.5 39
8 40
8.5 40.5
9 41
9.5 42
10 42.5
10.5 43
11 43.5
11.5 44
12 45.5
12.5 46
13 47
13.5 47.5
14 48

BOOT SIZING NOTES: In RevZilla's experience we have found the EUR->US sizing conversions as presented here to be slightly off. Below is RevZilla's recommendation for Men's Boots. 

EU Size

USA Size
42 8
43 9-9.5
44 10-10.5
45 11

As always, this size chart is only a guide and provides no guarantees of a perfect fit.

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

Click here to see the full Alpinestars Size Chart
Product Style RevZilla Item # Manufacturer Product # Availability
SM-MD 440339 470349-11-SM/34310105 In Stock: Ships next business day
LG-XL 440340 470349-11-LXL/34310106 In Stock: Ships next business day


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Please see our International Orders page for orders shipping outside the US.

We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

See our full Shipping Policy for further details.


If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

Write a Product Review for a chance to win our monthly $100 giveaways.
Alpinestars Thermal Tech Socks 4.6 5 34 34
Does what its supposed to do and good Snug Fit! Its a set of socks. What else is there to say?? They're warm, fit nice and snug with good compression on the calves. They fit right up to your knee. I am a size 11.5 shoe size and got the L/XL. Perfect fit. Alpinestars size charts are spot on. Make sure you know what your size is and use the size charts before ordering your own. I received mine as a present and didn't purchase it on Revzilla. however, I like them so much, i will be ordering a couple more pairs here on Revzilla. As always Revzilla is awesome selection, fast shipping and outstanding customer service. November 24, 2015
Decent socks, not super warm though Socks overall work well, but don't expect them to get the job done on their own. Once the temperatures get below 40 degrees your feet will get cold with these socks. I do have riding shoes which allow some air flow, so maybe if you don't have airflow it would be different. Overall they do help, and are extremely comfortable, just remember you'll need some sort of winter riding boots/shoes to combine with these socks to get into those less than 40 degree temperatures. October 19, 2015
Nice socks Bought these socks for my cool/cold weather commutes here in n.e fla .i wore ski socks last year but they didnt come past the top of my boots.these do ( im 5' 10 ") they come up just below my knees . The foot has nice cushion/insulation without being to bulky. I havent worn them yet except for walking around the house .i wear a size 10.5 shoe so i bought the lg/xl.the fit is spot on October 6, 2015
just what i was looking for These socks work great , keeping your feet warm and legs also as they raise all the way just past the knees. Size was spot on , I'm an 8.5 shoe size and the small- medium fit perfectly. Would definitely recommend to anyone looking for something to keep their feet warm during cold weather or night riding. May 28, 2015
warm & comfortable Overall, the socks are great for cold weather riding. They are a bit long, as they almost cover my knees, but I found that it's better to cover too much of my legs than not enough, especially in cold weather. Nevertheless, they stay warm and dry. Great product. January 26, 2015
pricey, but they get it done I never thought I'd spend this much for a pair of socks, but it's worth it to me to be comfortable when I'm riding to work in the cold. These socks alone get the job done at freezing temps for about a 60 min high way ride above 65mph. Above freezing they are all I need. But since I have a longer commute than that, at colder temps I find heated gear is still needed. Once I'm at work, I can wear these all day with my gore-tex riding/hiking boots and my feet are dry and comfortable and temperature neutral. In fact, I don't even think about them when wearing them which just goes to show how well they work. January 25, 2015
Soft and warm socks Was comfortable to ride in this socks (under Joe Rocket Big Bang 2.0 Boots) - was not very cold, about 40. Kept legs warm and dry. They seem to be very high - almost covering my knee (i have 32 inseam), but did not bother under pants. So i recommend this product November 29, 2014
These are great! These thermal socks are the best I have purchased - While I live in a failry temperate place (Perth in Western Australia) it gets relatively cold for us here and I get really cold feet. I have tried a number of thermal options prior to these Alpine Stars ones, and these are by the best by far. June 9, 2014
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Have a functionality, fit, or otherwise product-specific question about the Alpinestars Thermal Tech Socks? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Alpinestars Thermal Tech Socks
Already Asked: 3 Questions, 45 Answers
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RevZilla Store asked: Why did you choose this?
Rob S: Have a few pairs of the summer version, thought I'd give the thermal a try now, as the temps start to drop. Nov 1, 2015
George R: Description, features, and reviews. I'm hoping for naturally warm feet! Oct 10, 2015
John B: Like the Pro Coolmax ones and want to try these out. Oct 10, 2015
Nicholas B: They work well for what they are built to do, comfortable and wick moisture well. Sep 25, 2015
Gary S: Looking for thick knee high socks for wearing under my new Alpinestars Toucan boots. Sep 5, 2015
Martin W: I live in a very cold winter climate, and these seem to fit the bill. Sep 5, 2015
mark c: need another pair of warm socks for the fall and winter Jul 8, 2015
A S: Wanted some good high socks to wear with my Icon Elsinore boots May 17, 2015
Nicholas R: Warmth! Sometimes you need a little bit extra to keep your toes warm and your shirts warm. Apr 16, 2015
Allan S: Phenomenally comfortable socks for under boots. Warm, but not sweaty. Good height--right up to the knee. And, they're not nearly as expensive as their competitors. I've been using these for a few years now. Apr 14, 2015
A S: The socks are awesome, period. Apr 9, 2015
James V: I needed thermals for cooler temps in early spring. They are extremely warm and comfortable. Great product. Mar 15, 2015
Eric W: Needed a better sock than your plain old tube socks for underneath my riding shoes to keep my feet dryer. Mar 14, 2015
Kirk G: I have had these for a while now and they are VERY good socks. They seem to be holding up very well and they have kept my feet warm in 40ish degree weather Mar 5, 2015
Daniel H: I wanted a long winter sock to use with my riding boots to avoid any rubbing/chaffing at the top of the boot. Feb 10, 2015
A S: I wanted to try to warm my feet, Jan 10, 2015
James D: Sub-$20 and nearly knee high.. Paired with wool socks, your feet will never go cold again. Nov 4, 2014
Stephen S: These are my favorite winter socks Oct 11, 2014
Wade T: hopefully extra comfort with the Gore-Tex boots I just ordered. Sep 29, 2014
Richard D: Good socks that you can wear for a few days straight on a long trip without getting too obnoxious. Aug 4, 2014
halim c: "riding in michigan, this helped extend my riding season." Jul 29, 2014
Regina C: Alpinestars's gear is good. Shipping this to my son in Germany. Jul 22, 2014
K V: for winter Jul 20, 2014
Petrina P: the rider reviews sounded good and they are reasonably cheap Jun 14, 2014
Jeff L: They do the job. May 21, 2014
Tom M: Michigan during late spring is low 40's in the morning and 70's in the afternoon. Looked for alternative to insulated riding pants over jeans and there bulk. These work on the cooler morning without the need for over pants. May 3, 2014
Lowell P: Great socks...and warm! Apr 30, 2014
Matthew B: Warm, comfortable, great fit. Feb 11, 2014
Colton S: Wonderful. I love these socks for when I ride. They dump all the heat on hot days and they stay dry. On cold days they help out more then any normal shoe sock would. I will be getting more of them later. Feb 7, 2014
Anthony B: A very warm sock, and durable....... Jan 26, 2014
Keith K: These are simply the best socks for winter riding. With my Sidi boots my feet never get cold even in 30's. Yo ucan also wear them when it is warmer, but go with A/P summer socks once it gets over 80 degrees. Jan 20, 2014
David M: cause gumboot socks don't cut it Jan 9, 2014
A S: Look. Dec 28, 2013
Mathew C: To keep my feet warm on 38 degree days, and they work Dec 26, 2013
Mike L: Want to try some socks for cold weather. The summer socks I purchase from Revzilla worked well so I thought I would try some reasonably priced socks for warmth. Nov 29, 2013
E V: Winter riding Nov 17, 2013
Daniel G: Needed some thick socks to go along with my Latigo Air RR Boots during Central Texas winters. Nov 13, 2013
Patrick Q: Needed to get over the $300 value. Oct 14, 2013
Catherine M: Needed a warm, tall sock for cooler weather rides - hopefully, these will cover that ground and they're not bending my budget much. Oct 1, 2013
John O: Have a pair...like them...don't fall down Aug 11, 2013
A shopper asked: can anyone tell me if the sm-md are too small for 9.5 feet? I don't want to cram huge socks into 44 boots Oct 19, 2014
Answer this · Send to friends Good question? Yes (0) No (0)
Kim B: These are the best socks I have ever purchased. The sizing is the same as your usual boot - the large would be better for someone with a 44 sized boot Oct 31, 2014
Reply to Kim Good answer? Yes (0) No (0)
Richard K S: I wear a size 8 1/2 and they fit me perfectly. I think they might be just a tad too small too small for you and I'd recommend moving up a size. Oct 19, 2014
Reply to Richard K Good answer? Yes (0) No (0)
Robert J: Probably tight fit. Size 8.5 is upper end of sm-md. I have lg-xlg for my size 45 A* boots. Work great! Dec 10, 2014
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Mike L: I agree with Kim B, I wear a 44 boot and the large is the proper fit for me. They are nice socks. Nov 18, 2014
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A shopper asked: What is the sizing for these socks? Could you please take a look at the package? I can't seem to find the sock sizing anywhere on the internet, thank you! Nov 23, 2013
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Joe H: No longer have the package and I don't remember. sorry Nov 25, 2013
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