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TRENDING THERMALS
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FEATURES
Why Thermajohn’s the one for you
Lay - Flat Collar
Forward Seam
Stay Tucked
Flex Waist At Side
Ultra Light Weight
Wicking Quick Dry
Interior
Back Ribbed Cuff
FABRIC
What Sets Us Apart
Warm
The fabric uses your body heat to keep you wrapped in a layer of protective warmth.
Light
Combat winter cold with ultrasoft fabric as light as a feather.
Dry
Perfect outdoor companion, your thermal will keep you dry and active all day long.
Comfortable
Experience ultimate comfort with fabric that fits like a hug you won’t want to let go.
REVIEWS
What Everyone’s Raving About
Steven P.
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Very comfortable under my jeans, thin, yet warm, and a great price. Highly recommend.
Andrew A.
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These are not like thermals you are probably used to or picturing in your head. These are thin and feel like smooth felt. I don't own any clothing that feels like these do, very unique in that regard. It's still late summer here so I can't attest to how warm they are but one thing is for sure, they don't feel scratchy or uncomfortable. They are more like wearing silk. You may not even notice you're wearing them.
Michael R.
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This fabric cannot feel any softer on my skin. You just want to sleep in it all day and night long. Mix and match your colors!
Richard
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Beautiful. Very silky, thin material that perfectly clings. Nice and warm. Warmer than my old school thermals that are much thicker. Great for travel with quick drying.
Miguel S.
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True to size and comfy. Layer it on top of layers. You can't go wrong!
William S.
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These are very lightweight and at first I doubted they would keep me warm. Once I wore them outside the first I was amazed at how well they kept me warm. They do run a bit small but not much, and they have a good stretch to them. Well worth the price.
Kitty
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Fits as expected. Husband is 6'1" 198 got a large son is 5'6" 135 got a medium. Stitching around waist was off but I can fix it. Live in Florida, got these for a trip to Alaska. When you buy boys black outfits they want to put them on and be ninjas.
Robert C. Dixon
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Just what I'd hope for. Great fit. I ordered a size larger so I could get the length needed for shirt to stay tucked in. Very happy I did that.
Robert C.
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Top quality shirts I have bought these before and I have never been disappointed.
John J. Parker
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Awesome shirt. Very comfortable and lightweight. Makes for a great base layer. I normally wear size small shirts and the medium fits great.
William S.
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These are very lightweight and at first I doubted they would keep me warm. Once I wore them outside the first I was amazed at how well they kept me warm. They do run a bit small but not much, and they have a good stretch to them. Well worth the price.
Meghan F.
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We loved the quality but the set runs small, in particular the shirt. The set is very nice and would suit someone 5' 7" or shorter. My husband is 6' and the shirt was very short wasted and too tight unfortunately. Afraid to order a larger size because the bottoms would be baggy if they stretched any after wearing.
Chad M. Rice
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The fit is very good, just what I wanted
Lucy K.
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I ordered these for my husband and he loves them. He says they are soft and really keep him warm. He liked them so much I had to order him another pair!
Joseph G.
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My wife and I recently moved to NY and decided to purchase thermal underwear before winter begins. We ordered 2 sets, one for me from Thermajohn, and one for her from Thermajane, that arrived as promised. The sets arrived packed nicely. They feel comfortable and very warm and the inside lining is very soft.
Miguel S.
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True to size and comfy. Layer it on top of layers. You can't go wrong!
Allan K.
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They look and feel great. The waist band is perfect not to bulky and elastic around the ankle doesn't feel like your squeezing you foot through a sausage casing..will probably buy more. And they keep you warm.
James E. Tate
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Bought these for my son who was taking a trip and needed cold weather wear. He loves them.
Mickey A.
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Very soft and warm. Fast shipping. Do not think twice about buying them.
Jonathan M.
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These are very lightweight and at first I doubted they would keep me warm. Once I wore them outside at first I was amazed at how well they kept me warm. They do run a bit small but not much, and they have a good stretch to them. Well worth the price.
Jeffrey
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Great base layer. Lightweight. When I'm wearing it, I forget I have it on.
Karen
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My husband loves it. It fits him well and kept him warm during winter. We’ve had car problems last winter during a snow storm and he was grateful to have this inner layers. He also said they were comfortable. He is 6 feet and about 200lbs we got the medium size.
Susan K.
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One of my sons requested these as a gift. He is built slim and most pajamas swim on him. I read the reviews that these ran a bit small so I ordered him medium. They fit perfect.
Craig M.
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These are the nicest thermal pants bottoms that I have ever purchased. They are very warm and comfortable and they are sized perfectly. The thermal pants elastic waist band material is very wide, which means they stay up well and they are very comfortable to the waist. If I had not bought as many as I did I would have re-ordered this product without a doubt. I will never wear my older narrow elastic long john bottoms ever again, they are going in the rag bag.
Joseph G.
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My wife and I recently moved to NY and decided to purchase thermal underwear before winter begins. We ordered 2 sets, one for me from Thermajohn, and one for her from Thermajane, that arrived as promised. The sets arrived packed nicely. They feel comfortable and very warm and the inside lining is very soft.
Mary R. Lyons
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I bought this thermal fleece top for my husband. He really likes it because it is warm without being bulky.
Dennis I. Massey
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These are the most comfortable underwear I’ve ever worn. A couple of times I have actually had to feel for the band because it felt like I was wearing nothing.
Return Policy
Easy returns within 30 days from placing an order.
Customer Care
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