The Under Armour Boys ColdGear Long Sleeve Baselayer is the perfect companion for outdoor adventures in cooler weather. This performance apparel is designed to keep young athletes warm and comfortable without adding unnecessary bulk. One of the standout features of this long sleeve baselayer is its dual-layer fabric. The ultra-warm brushed interior provides superiorly cozy warmth, while the smooth, fast-drying exterior ensures that sweat and moisture don't stick around. This means your child stays dry and comfortable, even during high-intensity activities. What sets this Boys' ColdGear Long Sleeve Baselayer apart is its strategic design. The stretch-mesh back and underarm panels offer strategic ventilation to help regulate body heat, while the 4-way stretch material allows for unrestricted movement in every direction. It's a baselayer that moves with the body, ensuring your child can run, jump, and play without any discomfort. This Under Armour baselayer not only performs well but also looks great. It has a streamlined fit that's not too tight or too loose, promising a flattering look. The dropped, shaped hem adds a touch of style and ensures that the baselayer stays in place, no matter how active the wearer. It's made of a durable blend of 87% Polyester and 13% Elastane, which promises longevity and resilience. The Under Armour Boys ColdGear Long Sleeve Baselayer also features an ergonomic design that keeps seams off of high abrasion areas. This thoughtful detail helps to prevent any potential discomfort or chafing during movement, further enhancing the overall wearability of the garment. Even after a day of strenuous activities, cleaning it is a breeze. It's safe to machine wash with like colors and can be tumble dried on a low setting