2XU Men's Cycle Long Sleeve Top 95% Polyester, 5% Elastane;Machine Washable - Cold Water, No Bleach, Line Dry Polymesh X high filament, breathable fabrication with closed mesh structure for exceptional moisture management and vapor release 3D Thermal Knit fabric finished with brushed underside for a seriously warm, bulk free garment Lightweight garment with refective trims, angled back pockets, and elastic back hem China