Soft knit fabric with engineered mesh ventilation, mapped to the places you need it most Nearly sew-free design to eliminate chafing 4-way stretch material moves better in every direction Material wicks sweat & dries really fast Classic racerback design for full range of motion Style #: 1379148 90% Nylon/10% Elastane Imported Machine wash cold with like colors Do not bleach Do not iron Do not use softeners Do not dry clean