Soft knit fabric with engineered mesh ventilation, mapped to the places you need it most|Nearly sew-free construction to eliminate chafing|4-way stretch construction moves better in every direction|Material wicks sweat & dries really fast|Raglan sleeves - Style #: 1366500|Reflective details for low-light runs|52% Nylon/48% Polyester|Imported - Machine wash cold with like colors|Use only non-chlorine bleach when needed|Tumble dry low|Do not iron|Do not use softeners|Do not dry clean