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Under Armour

Under Armour Mens Packaged Base 4.0 Leggings

  • Based on 2,928 reviews
Condition: Used - Like New
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Availability: Only 5 left in stock, order soon!
Fulfilled by Blu Sky
Arrives Jul 1 – Jul 8
Order within 1 hour and 31 minutes
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Size: Medium


Color: Black


Description

UA Base 4.0 Extreme Baselayer 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, closely managing your body's microclimate to keep you warm & comfortable. Material wicks sweat & dries really fast. 4-way stretch construction moves better in every direction. Performance elastic waistband. Working fly. Inseam: 30.5". Under Armour Men's ColdGear Base 4.0 Leggings are built for the snow, extreme cold weather and lower activity. These men's cold weather leggings feature a unique pattern traps heat without adding bulk. Think long underwear, revamped for today's top athletes. Wear under, or as, your gym pants, training pants or workout pants. Under Armour inspires you with high-performance, quality athletic gear you never knew you needed and can’t imagine living without. From stretchy, sweat wicking fabric to keep you light in the heat to cold weather gear that keeps you warm, Under Armour clothing helps you perform at your best. Ideal for the gym, sports or outdoor fitness—from football, basketball, golf, volleyball and tennis to hiking, running, cycling, yoga and weight training. Whatever training you do, get inspired with Under Armour.

Package Dimensions ‏ : ‎ 12 x 8 x 0.5 inches; 1.4 Pounds


Item model number ‏ : ‎ 1343245


Department ‏ : ‎ mens


Date First Available ‏ : ‎ November 1, 2018


Manufacturer ‏ : ‎ Under Armour


Best Sellers Rank: #29,361 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #93 in Men's Compression Pants


#93 in Men's Compression Pants:


Customer Reviews: 4.8 4.8 out of 5 stars (3,160)


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jul 1 – Jul 8

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.

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Top Amazon Reviews

    • The comfort is unbelievable! The fit everything.
Size: Medium Color: Black
Sizing up the man: * Waist: 33", Hips: 37", Inseam: 33" * Thighs: 21", Calves: 14", Ankles: 8.5" * Weight: 160 lbs Pros: The inseam can't be 30.5" it's to perfect. It's has to almost be 32", The butt is a little baggy, but I'm not a super active guy, so my butt is on the small side. The waistband is comfortable. You can lounge around in these and be comfortable physical and thermally. They are so much warmer than the Base 3.0s. They are truly "fitted" for my shape. Slight hug on the calves nothing uncomfortable or compression like. There is no discomfort on my thighs either. They seem to wick moisture very well. I will be buying another pair of these. Oh, the quality is there. When you get them on, pull them up to much then slide everything down to where it's comfortable. Straightens out the leg hairs if you have them. More comfortable that way too. Right, the fabric is strong and a great thickness. I wasn't sure how "leggings" would feel but dude. I love them. Where have these been my entire life. I will be wearing these as much as possible during the winter. ... show more
Reviewed in the United States on January 20, 2025 by Jake
    • Perfect base layer for cold weather
Size: Large Color: (001) Black / / White
Great cold-weather base layer. Keeps me warm in the coldest conditions ... yesterday it was -2 degrees outside. These are definitely "leggings" because they fit skin tight. I have a 34" waist and stand 6'2" (mostly all legs) ... the large size initially fits perfectly ... from my waist to my ankles. Expensive ... but the best thermal layer that I own and well worth the cost. Highly recommended. ... show more
Reviewed in the United States on January 11, 2026 by B. Bates
    • Warm and comfortable
Size: X-Large Color: (001) Black / / White
Warm is an understatement. I ordered 1 size down to ensure a comfortable fit that wasn’t bulky under my clothes and it worked out perfect. After a significant weight loss winter hit a bit harder than it has in the past and this kept me warm and comfortable at football games and in the field.
Reviewed in the United States on January 21, 2026 by Steve J.
    • Base 4.0 leggings warm and comfortable
Size: Medium Color: (001) Black / / White
Solid 145 5’11” Small Fits good little long but good Base 4.0 Warm and comfortable for 23*f Played golf with them at 50*f and was not too hot. I recommenced them
Reviewed in the United States on January 22, 2026 by Charliejo
    • Warm and cozy
Size: 3X-Large Color: Black
Tight in legs and loose in waist and ass.
Reviewed in the United States on January 5, 2026 by Aric Morgan
    • Not what i expected
Size: X-Large Color: Black
The quality and thickness are good. Thicker than what I wanted or expected. But quite a bit thinner than the other brands I’ve used. Sizing seems a bit off. I ordered my size according to their guide and ai generated size which matched. And they are for me a bit on the snug side. But for what I need them for they will work. As for the price I can’t really say. I feel they are a bit pricey but if they do what I hope they will do it will be worth it. Will I buy it again most likely. Will I buy a different size, most likely. ... show more
Reviewed in the United States on October 26, 2024 by Kitty
    • Worth the money! Purchased for working extended hours outdoors & for a trip to Alaska.
Size: Large Color: Black
Short Summary: Worth the money! Purchased for working extended hours outdoors in subpar conditions & for a trip to Alaska. Yes, they are pricier than others. HOWEVER, the saying “you get what you pay for” is positively true! Detailed Summary: My husband (who is hot natured) purchased a set last winter when he was stuck outside at work for extended hours on end in subpar weather. He couldn’t say enough good things about how comfortable & warm they kept him. He was able to comfortably layer them underneath his work clothes and I n no way did they restrict or prohibit any movement nor cause him to sweat when he was working intensely setting & cleaning up trench pumps, boxes, wading through mud with LDH, etc. (For reference he’s 5’12”, 300# & purchased size: 2XL. He wears 3XL shirts & 44 x 32 jeans) Also, due to my husband’s recommendation, purchased a set for my mother to wear in Alaska on her cruise & excursions. For transparency at first she was rather skeptical but after wearing them she’s never wearing anything else! As soon as she could she excitedly sent me a message with the BIGGEST THANK YOU ever for my husband recommending them & me purchasing them for her. She said others were complaining about freezing yet she’s never been so comfortably warm outside in cold weather! Both my mother & husband said they fit more snugly than they were use to how other brands fit. However, that’s how these are intended to fit. Neither of them like clothing to fit tightly… until they wore these & only these! (It’s only my assumption that if your deciding factor on whether or not to purchase them is due to wanting a looser fit that you could, obviously, order up from your normal size. However, in my opinion, I think that’s slightly defeating their purposefully intended design.) Hope this has helped with any decision making information you were looking for! ... show more
Reviewed in the United States on August 29, 2023 by Posey
    • Great base layer for cold weather
Size: X-Large Color: (001) Black / / White
Great base layer when working outside in cold climates.
Reviewed in the United States on December 25, 2025 by Gary Thomas

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