Lightweight as a feather, packed with technologies.No matter how hot is outside, the EXCELERATION sleeveless shirt keeps you cool and dry throughout your run thanks to the combination of the new generation AERNET PLUS fabric and the exclusive COOLVENT system.FEATURES:- Ultralight AERNET PLUS structure made of recycled material in the front area provides maximum ventilation during movement.- COOLVENT system at back guarantees proper thermoregulation and an excellent sweat dispersion.- Soft design and open sides offer full freedom of movement while running.- Reflective UYN logo on the back for better visibility and safety when running in low light conditions.Composition:Back:polyamide 72% polyester 19% elastane 7% polypropylene 2% main fabric:polyester 90% elastane 10% .Washing Instruction:-Mild process 40°.- Do not bleach.- Do not tumble dry.- Do not iron.- Do not dry clean.