LAPASA Men's Thermal Underwear Top Crewneck Long Sleeve Shirt Base Layer Lightweight Midweight Heavyweight Winter M09/M26/M55
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Returnable until Jan 31, 2026
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Availability:
In Stock.
Arrives
Tuesday, Mar 31
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Team Name: Thermoflux 100 Lightweight
Athlete: 2 Pack
Size: Medium
Color: Black 2 Top
Department : mens
Date First Available : March 13, 2023
Best Sellers Rank: #129,771 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #106 in Men's Thermal Underwear Tops
#106 in Men's Thermal Underwear Tops:
Customer Reviews: 4.5 4.5 out of 5 stars 6,463 ratings
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If you place your order now, the estimated arrival date for this product is:
Tuesday, Mar 31
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View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Team Name: Thermoflux 200 Midweight
Athlete: 2 Pack
Size: Small
Color: Light Grey 2 Pack
I bought my first LAPASA base layer set based on reviews saying they were the warmest layers ever. I live in Ohio and man does it get COLD here. I'm talking 0 degrees Fahrenheit at times in the winter. True to what reviewers said those 300 thickness sets were the warmest thing ever and SO warm and comfortable. I decided to come back and buy a couple of these shirts in the lighter weight for when I just needed a little added warmth under a sweatshirt. These are perfect for that. They are true to size but do not fit super tight like some base layers and I happen to prefer it this way. If you want them tight, you could size down but do be aware than when sizing down you will lose length and this does matter if you're taller. I like that these are very soft and comfortable on the inside but smooth on the outside so they don't cling to whatever you wear over them. Nice flex to the material, neither flimsy nor constricting. Great for working, hiking, or doing other activities outdoors that involve a lot of movement. Absolutely worth every penny. Highly recommended.
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Reviewed in the United States on January 15, 2024 by sbonne
Team Name: Thermoflux 200 Midweight
Athlete: 2 Pack
Size: XX-Large
Color: White 2 Top
Female 38. 5”8 245lbs. Bought 2X Sorry it’s been 2 years, I rarely write reviews but I just dug this out the attic and omg where has this been all my life? (Other than the attic). Someone with autoimmune conditions and can get hot in a matter of seconds and then ice cold I can say this sweatshirt is my new best friend. It’s lined with warmth but still pretty thin comparatively. It’s shape fitting so it hugs you in all the right places. It’s soft inside and out. I wore it 2 years ago in Montana where it’s cold and it was an under layer. No complaints. I live in Florida so naturally this thing went into the attic. Found it in holiday decor and put it on bc we’re having a short cold snap. It’s amazing, thin and soft but still double lined, fleece on the inside. Didn’t shrink much in the wash. Price was about the same as other thermals but this is by far better than any other thermal shirt I’ve ever owned. And no I didn’t get any incentives for leaving this review. Will purchase multiples. Wish there are more colors.
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Reviewed in the United States on October 8, 2023 by shayna lingebach
Team Name: Thermoflux 300 Heavyweight
Athlete: 1 Pack
Size: Medium
Color: Dark Grey
This one is thick and really warms me up as my innerwear on my scrubs (medical professional). Might buy another one with a different color this coming winter. Great premium wuality with losing it's shape.
Reviewed in the United States on September 26, 2025 by Lexter DJ
Ordered for our grandson and he loved it. It fits close to the body and is a nice thin layer that keeps him warm and comfortable. I would've given 5 stars if I'd received the camo print that I ordered but instead received solid navy. Grandson was happy with it so we didn't return the shirts.
Reviewed in the United States on May 4, 2024 by Dee
Team Name: Thermoflux 100 Lightweight
Athlete: 2 Pack
Size: Medium
Color: Black 2 Top
I really liked these a lot so much so that I went a ordered another pair in white. These are thin and breathable, but nice and warm if used as a base layer. By itself you may not find it warm because of the polyester fabric, but under another shirt (how I use them) they are surprisingly warm for their weight. The product is extremely light, stretchy and in fact has a brushed fleece inner that feels nice on the skin. It is not a double layer polyester thermal just a single layer which is brushed underneath. I purchased my regular size and the fit was spot on with the arms definitely long enough to extend to my wrist and stretchy enough to be snug and not restrictive. Also worth mentioning is that my neck holes were of normal circumference and not super wide like some others have stated, maybe they've improved that with these later runs. All in all a great, thin and lightweight thermal that works great as a base layer. I would definitely buy again if needed. P.S; they also machine washed and dried without issue, but the tag states to hang dry....
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Reviewed in the United States on January 29, 2018 by PJ
Team Name: Thermoflux 300 Heavyweight
Athlete: 1 Pack
Size: X-Large
Color: Dark Grey
This is a real thermal. It's not posing in a thin, assuming way. It's difficult to find thermals that are meant to keep you warm, most seem to be a fashion accessory. It feels and fits very well, with a longer body length, so there's no blast of cold air on the bottom of your back. I'm not sure if this is the warmest thermal, possibly there are others that are warmer, but this one is very good, and definitely a great bang fire the buck.
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Reviewed in the United States on January 11, 2025 by john b.
Team Name: Thermoflux 300 Heavyweight
Athlete: 1 Pack
Size: Medium
Color: Light Grey
This thermal was even better than expected. I just bought two more in different colors. I'm really sensitive to cold and needed something for winter time. The moment I slipped this on, I knew I made a good purchase. The thickness is between a sweatshirt and a thin cotton thermal, so it's not bulky at all. The medium size fit just right for me. It's really soft on the inside and feels perfectly warm. The only way I can describe it is it's like getting a big warm hug all day long. This is going to be my go to base layer this winter.
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Reviewed in the United States on December 3, 2022 by M. Mcnam
Team Name: Thermoflux 200 Midweight
Athlete: 2 Pack
Size: X-Large
Color: Black 2 Top
Edit: I still love these tops, but after one wear, they are pilling pretty severely . 3 stars because the pilling is very noticeable. I have been looking for the perfect fleece lined tops, and these are them! Got the medium warmth. They are the perfect thickness, the outside fabric does not pill like others I have tried, the sleeve length is good, and they are not too tight or loose. Win-win all the way around. I even got the 2-pack, and am considering another set so I can get rid of all the other ones.
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Reviewed in the United States on January 25, 2024 by CM CM