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SIMIYA Thermal Underwear Set for Men Long Johns with Fleece Lined Base Layer for Workout Skiing Running Hiking

  • Based on 457 reviews
Condition: New
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon

Arrives Sunday, Nov 24
Order within 4 hours and 32 minutes
Available payment plans shown during checkout

Size: Medium


Color: Grey


Package Dimensions ‏ : ‎ 1 x 1 x 1 inches; 1 Ounces


Item model number ‏ : ‎ WU15


Department ‏ : ‎ mens


Date First Available ‏ : ‎ August 4, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Muy bueno
Size: Large Color: Black
Me encantó es lo que esperaba
Reviewed in the United States on November 29, 2023 by Adonys

  • Light and warm
Size: Medium Color: Black
Good quality
Reviewed in the United States on November 5, 2023 by Placeholder

  • Best thermal
Size: Medium Color: Black
It's soooooo warm and looks great on me. It's the quality for me
Reviewed in the United States on November 12, 2023 by Julie S

  • Nice Fitting Thermals
Size: Large Color: Grey
I recently lost some weight and the elastic on my old set was giving out. These are very comfortable and should serve its purpose well. It hasn't been too cold to really test these out, but comfort wise they are great. They are form fitting without being too tight and the seams are all flat, so no hot spots / pressure points. ... show more
Reviewed in the United States on November 13, 2023 by EP3eDoubleAnchor

  • Snug Fit, Super Soft
Size: X-Large Color: Grey
I am 5'10", 195 lbs., with a 43" chest, and size XL fits snugly around my thighs, calves, chest, and upper arms, but a tad long in the legs and sleeves (see pic). Overall, I'm not sure that a different size would have fit any better, and am happy with this order. The material is stretchy, light, and REALLY soft on the inside. I have no doubt that it will help keep me warm during the colder months, and should wear well under my other clothing. ... show more
Reviewed in the United States on October 19, 2023 by tjutter2 tjutter2

  • Whoa, these are great!
Size: X-Large Color: Black
These are nicer than I expected! They are made from a very comfortable stretch fabric with beautiful detailed seams. They almost look too good to wear UNDER my clothes. They have a snug fit, but the spandex allows them to stretch and fit comfortably. I expect these to be my go-to thermals this winter. ... show more
Reviewed in the United States on October 16, 2023 by Florida Parrothead

  • Not bulky
Size: Medium Color: Grey
I got this SIMIYA Thermal Underwear Set to give my husband as a Christmas gift. The pictures I have added were taken after I laundered them. They came out of the washer and dryer in good shape. The fabric is very soft and thin enough that it won't be bulky under clothes, yet feels warm. We will find out more when the weather turns cold. The stitching is secure and done well. The seams in the front and back of both pieces gives a nice fit. The back of the top is a bit longer so it should stay tucked in. So far, I am pleased with this set. ... show more
Reviewed in the United States on October 5, 2023 by GeMaC GeMaC

  • Great fit!
Size: Large Color: Grey
These thermals are excellent. The material is very soft on the inside, with a smooth exterior that fits well under clothing. I washed in cold water and hung to dry, no apparent shrinkage occurred. The fit is true to size. They do have a slim fit, as is expected with thermals that will be worn underneath clothing. If you prefer a looser fit then sizing up would be a good option. This will definitely be a welcome addition to the wardrobe when cold weather comes! ... show more
Reviewed in the United States on October 2, 2023 by Sarah L

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