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Product Details



GeoTherm combines breathable, quick drying, ultra-soft, 100% micro-poly fabric with fleeced backing to retain warmth. Heavyweight construction for maximum durability. Milled in Italy. Weight: 155g / 5.5 oz.

Size Charts:


Voler Team Apparel offers "European" sizing, which is smaller than U.S. sizes. When choosing Voler racewear, you should go up one size if you are unfamiliar with the smaller European sizing. Likewise, if you are between two sizes, choose the larger one.

Size Waist Weight Height Chest Inseam
Small 29-31 120-145 5'4" to 5'8" 35-37 9
Medium 32-34 145-170 5'7" to 5'11" 38-40 9.5
Large 35-37 170-190 5'10" to 6'2" 40-42 10
X-Large 38-41 190-220 6'1" to 6'5" 42-44 10.5

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Product Reviews

Rated 5 out of 5 by from Great running shirt My wife found this shirt on your website and ordered it for me. The mens medium seems to run a little small. I am 5'6" and 138lbs and it is on the snug side. Other than that I love it. It looks good, keeps me warm on our windy cool running days. After wearing it on my first 2 runs the snug fit didn't bother me at all. It's very comfortable; love it! The other day it was about 55-deg F and lightly raining. This was the perfect baselayer worn under my light weight rain shell.
Date published: 2015-05-02
Rated 5 out of 5 by from pretty impressive piece of kit material is as soft as it gets. ideal base layer for a chilly-to-cold day. Wore it as a base layer on a 40-degree, rainy 6-hour ride, and never once chaffed. Remarkably comfortable, does a great job of keeping you warm. Also, ZERO stench. Wore it on rides for 3 straight days, hung it up afterwards, and no smell at all. As I said, pretty impressive piece of kit.
Date published: 2015-03-22
Rated 5 out of 5 by from Awesome shirt I have worn this when running in cold weather (30) and have been very comfortable. It wicks sweat better than any other shirt that I own. It fits well and has survived several washings without signs of wear. I like it so much that I have purchased 2 more.
Date published: 2016-02-25
Rated 5 out of 5 by from Perfect winter apparel I bought 2 for Christmas. 1 for me & 1 for my husband. They are soft and warm. We've used them for numerous fat tire rides with temps in the low teens to 20's and they've kept us toasty warm.
Date published: 2016-01-05
Rated 4 out of 5 by from great fit except. overall fit true to size. have to wait for hot weather to test. it is advertised as a long tail, i would prefer it shorter so i don't have a lot to tuck into shorts.
Date published: 2015-03-20
Rated 5 out of 5 by from Nice surprise! This shirt is better than I expected. It's a great shirt for cooler weather and will work as a base layer. The inner lining is incredibly soft, warm and comfortable.
Date published: 2015-10-02
Rated 5 out of 5 by from Geothermal Undershirts Shirts fit well, are comfortable and do a great job. Good value.
Date published: 2015-03-24
Rated 4 out of 5 by from Tech wear The long sleeve is warm and comfortable. It does run small.
Date published: 2015-05-09
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