We all hate it. That stiff, distracted feeling you get when you're out in the cold. That's why, we built a baselayer that keeps you warm and dry without being bulky or riding up, so you can stay focused all season long. Dual-layer fabric with an ultra-warm, brushed interior & a smooth, fast-drying exterior. Stretch-mesh back & underarm panels provide strategic ventilation without sacrificing warmth. 4-way stretch construction moves better in every direction. Material wicks sweat & dries really fast. Ergonomic design keeps seams off of high abrasion areas. Mock neck construction for added coverage & warmth. Compression:Ultra-tight, second-skin fit. 87% Polyester/13% Elastane.