Under Armour Boys' UA Base™ 2.0 Crew Long Sleeve - Black Size (Kids - Unisex Clothing):XL stretchy UA IntelliKnit upper for

stretchy UA IntelliKnit upper for a super-breathable sock-like fit & feel

When the weather shifts

contoured fit and secure zip pockets

finished off on an ultralight outsole with elastic laces that keep these 'lil dudes securely on

Crafted with waterproof full-grain leather

Under Armour Boys' UA Base™ 2.0 Crew Long Sleeve - Black Size (Kids - Unisex Clothing):XL stretchy UA IntelliKnit upper forUA Base 2. 0 is built for cold weather and high activity levels. It uses a unique pattern that's designed to trap heat without adding bulk. Think long underwear, revamped for today's top athletes. UA Base 2. 0 Active Baselayer is lightweight, flexible & breathable for high activity performance in cool conditions Soft, brushed grid interior traps air against your skin, closely managing your body's microclimate to keep you warm & comfortable Material