UA Base 4.0 is a men’s baselayer built for extreme cold weather and lower activity. It uses a unique pattern that’s designed to trap heat without adding bulk. Think long underwear, revamped for today’s top athletes.
- UA Base™ 4.0 is our warmest yet, locking in your body’s heat to deliver extreme warmth in the extreme cold
- UA Scent Control Technology to keep you undetected in all pursuits
- Soft, brushed grid interior traps air against your skin, managing your body’s microclimate to keep you warm & comfortable
- Material wicks sweat & dries really fast
- 4-way stretch material moves better in every direction
- Fitted: Streamlined fit that’s not too tight or too loose.
- Style #: 1353349
- 78% Polyester/22% Elasterell
- Imported
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Dh2207 Verified Buyer –
I bought these for my boyfriend who is an avid hunter and Lineman, he loves them! They keep him warm without getting sweaty!
Frank601 Verified Buyer –
The whole process of ordering and recieving was wonderful, and the quality once they arrived is top notch. If you’ve been on the fence about ordering get off of it and do it!
Guls Verified Buyer –
This base layer is a game changer for cold weather. It is incredibly warm without being bulky it fits perfectly and wicks moisture like a pro. Ideal for any winter activity highly recommend!
Jm6990 Verified Buyer –
I don’t like wearing a coat in Wisconsin. I wanted a solution that provided warmth while still fitting my aesthetic. This base layer 4.0 has been perfect for me. It’s fitted, not bulky and makes a huge difference in keeping my chest and arms warm with just a long sleeve on top of it. I recommend!
bruce076 Verified Buyer –
I have the bottoms and tops, very warm perfect for late season Bow and firearms In NY. Don’t need mu… Show Full Review This action will open a modal dialog.
JohnG111 Verified Buyer –
Absolutely amazing – wore on single digit weather and only my hands and feet were cold
JG247 Verified Buyer –
The fit was great and the warmth is what I have come to expect with UA cold gear
Noah ch Verified Buyer –
This shirt blew my expectations away. I wear this on patrol and it keeps me warm throughout the night. I usually wear size L but got a M and it is nice and snug.
Cold Hands Need Gloves Verified Buyer –
This gear is amazing!! Top of the line! Remember to buy it on sale as 100 bucks is a lot!! Top and Bottom would cost you 200 gold coins but on sale 40% it’s only 120 gold coins!
Willo Verified Buyer –
I have one pair of their base 4.0 and about 5 years old so got new ones. I’m very disappointed they … Show Full Review This action will open a modal dialog.