Under Armour Men's 4.0 Crew Base Layer Shirt

Under Armour Men's 4.0 Crew Base Layer Shirt is rated 4.1 out of 5 by 34.
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Under Armour Men's 4.0 Crew Base Layer Shirt
Under Armour Men's 4.0 Crew Base Layer Shirt
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guaranteed for delivery
by Dec 24. details.

Guaranteed Holiday Delivery

Let our no-worries policy put your shopping stress at ease this holiday! Purchase eligible items and choose the appropriate shipping option at checkout. Your order's arrival on or by Monday, December 24 is guaranteed - or it's FREE! See details below.

Legal Terms & Conditions

  • For orders where delivery is not made or attempted by end of day on Monday, December 24, 2018, for the eligible item(s), we will credit your account in an amount equal to the purchase price of the item(s) in accordance with this offer
  • Please note, credits are not automatically applied to your account and must be requested
  • To request your credit, call Customer Service at 1-855-821-6911 starting Wednesday, December 26, 2018 thru 11:59 PM PT Thursday, January 3, 2019
  • Please note that this promotion may be terminated or modified at any time without notice
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  • All shipping costs are the responsibility of the customer
  • This program applies to:
    • Eligible items indicated with the "Guaranteed Holiday Delivery" tag
    • Guaranteed for Holiday delivery
    • Delivery Methods: Orders received and cleared credit authorization before 11:59 PM PT on Tuesday, December 18, 2018, for Standard Shipping, before 11:59 PM PT on Wednesday, December 19, 2018, for Expedited Shipping, or before 9:00 AM PT on Thursday, December 20, 2018, for Express Shipping
    • Orders shipped to a valid address in the contiguous United States
    • Attempted delivery on or before Monday, December 24, 2018, satisfies this offer
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Product Information:

When you are planning on spending hours in the cold and snow, protect your body with Under Armour® 4.0 Crew Base Layer Shirt. This long sleeve shirt is constructed of polyester and elastane, for the warmest and most durable fabric that you can rely on all season. The four-way stretch material moves with your body in order to tackle any activity, while the Moisture Transport System leaves you feeling dry and refreshed.


  • Fitted, next-to-skin crew base layer shirt
  • Delivers extreme heat, keeping you warm even in the brutal cold
  • Soft, brushed negative grid interior traps hot air, providing superior warmth
  • 4-way stretch fabric allows for greater mobility in any direction
  • Moisture Transport System wicks away sweat and moisture from the body
  • Anti-Odor technology prevents the growth of odor causing microbes
  • Brand: Under Armour
  • Country of Origin: Imported
  • Style: 1281082
  • Fabric Content: polyester / elastane


Rated 4 out of 5 by from Size I'm 5'10 175lbs usually wear medium clothes but got Large in base layer crew and legging just in case they fit just right. If u buy these buy next size up from what u wear
Date published: 2016-10-05
Rated 1 out of 5 by from It's still cold outside For the astronomical price of $85 for the top and $85 for the bottom you would think think I would be warm. I got dressed and headed into the woods for the morning hunt with confidence wearing my new thermals. It was only about 35 degrees which isn't too cold. Not 45mins into my sit and the chill set in. I was wearing insulated bib and jacket and these thermals gave me zero extra insulation. I could of worn pijamas underneath and had the same result. They were immediately returned. I bought a set for 1/3 the price and if need be I'll wear two sets and still save money. Ridiculous price for a terrible product.
Date published: 2016-11-15
Rated 5 out of 5 by from Does the job, fits well I bought this for attending my grandsons hockey games. Sometimes the arenas are meat locker cold, at least for a desert rat like me. I am 5'11' and 188 #. The large fit fine, it is a compression type fit but not uncomfortable at all. Only drawback is that I have to take it off if we stop for drinks or food as it is too warm for normal indoor temperature areas. I have base 3.0 & 4.0, depending on which venue we are visiting. Both are perfect for me.
Date published: 2017-02-25
Rated 4 out of 5 by from Very warm, sizing is way off. I'm quite fine wearing XL in UA compression gear, for UA compression tops I've considered getting a Large - ordered this in XL and despite being 'fitted' rather than compression, it's far and away the tightest UA gear I own. It's wearable and it is very warm, but the sizing is way off. Get at least one size up from other compression gear.
Date published: 2016-12-31
Rated 4 out of 5 by from really warm but not the best fit I bought a large originally but it was really tight had to return it but tried on a X-large in the store it was still kind of tight so I had to go all the way to XX-large to fit me right and still at that size it is still tight but comfortable to wear and is really warm. 6'4" 200lbs
Date published: 2018-02-07
Rated 4 out of 5 by from Good warmth I frequently in the outdoors in Toronto. I wear this under a shirt and in so far in - 2 degrees Celsius weather I can function without a jacket. Im 5'7 167 pounds and it's a fitted fit, not tight nor loose. It's pretty expensive though at regular price.
Date published: 2016-11-29
Rated 4 out of 5 by from Oddly fitted The shirt keeps you very warm. The issue is the size. It needs a bigger shoulder fitting because it is very tight under the arm. I bought for backpacking but I may not use it since it may cause excessive friction. The bottom of the shirt should be flared more so it fits better at the waist. I am 5'9" 165 lbs and I find the large tight under the arms.
Date published: 2017-12-11
Rated 5 out of 5 by from Great for extreme cold Bought these to work outside for a northern ontario winter and they work well. Was in -30°C and they helped keep me warm. My other cheap thermal doesnt compare. Even when i was working hard and sweat a bit, it pulled it away and kept me feeling comfortable.
Date published: 2016-12-15
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