Under Armour UA Packaged Base 4.0 Crew Top Boys'

UA Base™ 4.0 is built for extreme cold weather and lower activity. Their unique pattern traps heat without adding bulk. Think long underwear, revamped for today's top athletes.

Under Armour UA Packaged Base 4.0 Crew Top Boys' Features & Specifications:

• UA Base™ 4.0 Extreme Baselayer is our warmest yet, delivering extreme warmth in the extreme cold
• Soft, brushed grid interior traps air, 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
• Dropped, shaped hem
• Raglan sleeve
• Fitted: Streamlined fit that’s not too tight or too loose.
• Style #: 1373299
• 81% Polyester/19% Elastarell
• Imported