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Once the needle dips below 0 degrees Fahrenheit, it's just butt cold. Since you still want to ski, layering with the heavyweight Under Armour Base 4.0 Crew provides a good base for keeping the worst of winter at bay while you enjoy some fluffy turns on the mountain.

  • Heavyweight, four-way stretch polyester and elastane fabric maximizes body heat retention, breathes away moisture, and dries quickly if you take a hike in the afternoon
  • Flatlock seams, raglan construction, and ergonomically placed seams let you move naturally while skiing or boarding without chafing
  • Armour Block anti-odor technology in the fabric inhibits the growth of odor-causing microbes

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Under Armour Base 4.0 Crew - Men's

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Here's what others have to say...

4 5

Perfect for cold weather camping

  • Familiarity: I've put it through the wringer

I've been rockin' the Base 2.0 stuff for all my winter activities (snowboarding / skiing / shoeing) for the past few years. The 2.0 works wonders if you're getting your sweat on, but if you're just lounging around the campsite, you're gonna need something a bit more substantial. I skipped over the 3.0 and went right for the heavy weight stuff.

Paired with my Patagucci R1, I stay nice and toasty in this combo. Size wise I went with a Large (6 foot 1 @ 162lbs). I also wear a size large in their 2.0, but the 4.0 feels a bit more snug fitting.

The 4.0 stuff is always quite pricey, so catch it on a sale or when they are blowing out last years version.

5 5

Under Armour 4.0 Amazing

  • Familiarity: I've put it through the wringer
  • Fit: True to size

This product will keep you warm in almost any conditions. Just don't wear it in the summer. The little thermal pockets trap in so much heat its unbelievable. The shirt fits snug and feels good. I would definitely recommend this product.

If I order two of these today can I get...

Posted on

If I order two of these today can I get it by 12/19/13

Best Answer Responded on

Yes, if you order before 5:00 MST and select the free 2day shipping, those will be there by Thursday.

5 5

Perfect

  • Familiarity: I've put it through the wringer
  • Fit: Runs small

I was tired of wearing 4 layers when touring so I finally paid for a good base layer. By far the best investment in my clothing system. If you plan to hike or tour a lot, you will sweat a ton no matter how cold it is. I usually wear a wicking shirt over this to get the moisture away from my body. Also, Under Armour designed these to not be a real tight fit, it shouldn't fit like spandex. I usually wear a large but had to get an extra large for mine to properly fit my arms. I'm 6'1" and 150lbs. Seriously the best base layer you can buy.

5 5

Great product

  • Gender: Male
  • Familiarity: I've put it through the wringer

I use this almost every day to golf in the Cold PA winters, and just this and a heavy sweater makes the cold bearable. I used to have to layer up to 4 items, now 2 will do the job

5 5

Worked well for me

  • Gender: Male
  • Familiarity: I've used it several times

Used it a few times now snowboarding and it keeps me plenty warm.

5 5

Fits good

  • Gender: Male
  • Familiarity: I've used it several times

I love this shirt! Its nice to have under my outerwear. Keeps me warm in the snow. The fit was a little small get a size bigger than normal. Other than that love it.