Humidity. Sweat. City noise. Relentless sun. While short sleeves are first choice for some, they're not for all - the main reason we developed the ODLO Blackcomb light long sleeve base layer in a summer weight. Seamless, breathable, and lightweight, they're the second skin crafted specifically for workouts in high heat, complete with a nature-inspired, stylish graphic that never fades. Features: Active Cooling Enhanced Moisture Management Lightweight Versatile 76% Polyamide 24% Polyester (recycled)