The Craft Active Extreme 2.0 Women\'s Base Layer is engineered to make you lighter, faster and better, the most advanced baselayer once again ups the ante. The Craft Active Extreme 2.0 Women\'s Base Layer is made of a thin, lightweight and elastic fabric featuring CoolMax Air, a high-performance fiber that provides superior body-temperature management during intense workouts in mild to cold conditions. Body mapped mesh panels with big holes ensure superb ventilation while ergonomic 3D design provides a tight, perfect fit. Developed for devoted athletes.Craft Active Extreme 2.0 Women\'s Base Layer MaterialsFabric 1: 100% PolyesterFabric 2: 96% Polyester / 4% Elastane