Under Armour Boys' UA Base™ 2.0 Crew Long Sleeve - Black Size (Kids - Unisex Clothing):XL contoured fit and secure zip

contoured fit and secure zip pockets

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

Their crew-height design and secure fit pair comfortably with hiking boots or trail shoes for all-season outdoor wear

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 contoured fit and secure zipUA 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