Under Armour Base 2.0 Crew-43705 - Men's


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    Estimated to ship Jul 25 - details
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Under Armour knows that being an athlete is about pushing yourself; it's about going farther, faster and with more accuracy than you did yesterday. In the spirit of progression and the constant desire to advance to the next level, the Base 2.0 Line was born. Designed to be the warmest, lightest and driest gear on the market, the Under Armour Men's Base 2.0 Crew is the ultimate innovative baselayer designed to enhance your performance and help you reach your goals.

Featuring ColdGear® technology, wicking properties move perspiration away from your skin before it turns into chilling moisture while the ultra-brushed interior provides warmth and temperature-regulating comfort. The tailored fit provides warmth without being bindingly tight and the raglan sleeves make for unrestricted mobility as well as freedom of movement. Incredibly versatile and offering next-to-skin comfort, make the Under Armour Base 2.0 Crew for men part of your quest for glory.


  • Fabric: 93% 4.5 oz PolyArmour™, 7% Elastane
  • Under Armour's most versatile relaxed fit UA BASE crew Ideal for cooler conditions and a variety of activity levels
  • Mid-weight ColdGear® grid fabric is engineered for heat-trapping core temperature and fast drying moisture transport
  • Raglan sleeves and ergonomically placed flatlock stitching enhance mobility for superior fit and comfort
  • ArmourBlock™ technology stops odor causing microbes for maximum scent suppression

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Review Summary

4.7 out of 5

16 Reviews

  • Build quality: 4
  • Great design: 4
  • Performance: 4
  • Ease of use: 3

  • Cost: 1
  • size: 1
Quality: 4.8 / 5
Comfort: 4.7 / 5
Warmth: 4 / 5
Fit: 3 / 5

16 Ratings & Reviews

Great base layer
January 10, 2010

Fits a bit larger than the 1/4 zip model. But keep me warm in the same way, especially during these days when the temperatures under 40 degree. Great product.

Comfort: 5 / 5
Quality: 5 / 5
FitClothes: 3 / 5
Warmth: 3 / 5
from Rhode Island
45-54 yrs

Great shirt
September 25, 2013

I haven't had a chance to run in this shirt as I received it while the weather is still warm. But the fit is great, it's really comfortable and the warmth seems perfect.

Pros: Build quality
Comfort: 4 / 5
Quality: 5 / 5
Warmth: 4 / 5
from Carson City, NV
35-44 yrs

Great for outdoor work
November 28, 2013

I use it during our cold winters for outdoor work. It keeps you warm and dries off quick. Has a very nice fit.

Pros: Performance, Great value
Comfort: 5 / 5
Quality: 5 / 5
Warmth: 4 / 5
from Los Angeles, CA
45-54 yrs

May 21, 2013

I haven't had a chance to try this out in cold weather, but trying it on it fits great and is very warm. I'm looking forward to my first cold-weather fishing trip already.

Pros: Great design, Build quality, fit
Comfort: 5 / 5
Quality: 5 / 5
from Taiwan
25-34 yrs

May 21, 2013

I love this cold gear shirt. This shirt is comfortable,warm and breathable. I will recommend this to all my friends. The price on Altrec is lowe than other sites. It is a good deal.

Pros: Great design, Great value
Comfort: 3 / 5
Quality: 4 / 5
from Toronto, Ontario
35-44 yrs

Excellent Well Fitted Top
January 04, 2011

Loved the top. Fits true to size. Warm on a cold day (-10 Celsius). I wear it to bike to work and it's great and keeps dry.

Pros: Build quality, Performance
Comfort: 5 / 5
Quality: 5 / 5
FitClothes: 2 / 5
Warmth: 4 / 5
from Philadephia, PA

Great warm base layer
May 21, 2013

Title says it all. I have even worn just this running in 40F weather and have been comfortable. It is a great base layer for colder weather, as the outside face of the fabric is quite smooth and doesn't catch on the outer layers. The inside has a nice waffle fleece like pattern, which is really comfy. I am 6' 165 lbs (kinda lanky) with pretty broad shoulders, and the medium fits well. The fit is pretty snug, so if you want it a bit looser choose a size up.

Pros: Great design, Build quality, Performance, Cons: Cost

Extremely warm
January 04, 2010

My husband absolutely loved his Under Armour top! He had a different brand before but it does not compare to how soft to the touch this one is and extremely comfortable. And it looks like it will last a long time! Shipping was fast from altrec.com! Thanks!

Comfort: 5 / 5
Quality: 4 / 5
FitClothes: 3 / 5
Warmth: 4 / 5
from Boone NC
25-34 yrs

Nice Fit!
October 27, 2011

This baselayer is fairly light for the warmth that it provides. Large fit me well, with a relaxed fit(I am 5-11 210lbs). The shirt is long in the torso which I like because I don't have to worry about it becoming untucked while bending over. The interior grid pattern reduces bulk and does a good job of trapping body heat. It has very good anti-stink properties for a synthetic baselayer. I used it last winter while shoveling snow under a medium weight softshell and stayed comfortable into the mid teens while working. It wicks well but the relaxed fit hampers some wicking ability because the shirt is not constantly in contact with the entire upper body. I found the interior to be very soft and comfortable. Perfect if you don't like really tight baselayers.

Pros: Performance, Ease of use, anti-stink
Comfort: 4 / 5
Quality: 4 / 5
from Hershey, PA
25-34 yrs

Great equipment
October 20, 2010

This gear was purchased for an avid hunter headed to MT for the first time expecting variable weather. The underarmour adjusted beautifully.

Pros: Great design, Build quality, Performance, Ease of use, Cons: Cost
Comfort: 5 / 5
Quality: 5 / 5
FitClothes: 3 / 5
Warmth: 4 / 5
from Northeast US
25-34 yrs

Great for Skiing
December 21, 2011

This is a very good base layer for most days. Fits very comfortably and moves with you. I did get a little chill when I was riding the lift (about 10-15 °F) but once I started moving again I was fine. I may add another layer on for colder days or look into the UA ColdGear 4.0.

Pros: Great design, Build quality, Performance, Ease of use
Comfort: 4 / 5
Quality: 4 / 5
Warmth: 4 / 5
from Potomac, MD
55-64 yrs

Under Armour Base Layer 2.0 Crew
December 27, 2010

I got this long-sleeved crew base layer for my husband who is always cold in the winter. The fit was perfect for his 6 foot 170 lbs frame, and he says that it is an excellent insulating layer for inside in the sometimes chilly rooms and for outside in the cold under his winter coat. Good quality, is washing well.

Men's Base 2.0 Crew
December 27, 2009

I love it.Keep me warm and toasty on the chilled days.

Works great
November 16, 2009

It's pretty true to fit. I have a 43" chest and got the large. I use it under my bike jersey for cold weather riding. It kept me pretty warm (with a jersey over it) down to 40 deg F when night biking. I have long arms and it just covers down to my wrist when hunched into my riding position.

Love it
December 14, 2009

I haven't had a chance to wear it in extreme cold yet but it works well at moderately cold temps. I am very happy with the purchase and am planning on buying more Under Armour products.

Comfort: 4 / 5
Quality: 4 / 5
FitClothes: 2 / 5
Warmth: 4 / 5
25-34 yrs

Under Armour: Men's Base 2.0 Crew Shirt
May 22, 2013

Not bad, but definitely add a size up if you want it to fit perfect! Nice for cold weather runs!

Pros: Great design, Build quality, Cons: size

Also Available

Under Armour Men's Base 2.0 Crew-43705 Photo


Available sizes, while supplies last, include size small, size medium, size large, size extra large, size extra extra large and size xxxl: s, m, l, xl, xxl, xxxl.

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