Materials: 93% Performance Polyester 7% Lycra Features: wicking factor, sublimation-friendly, two needle double-stitch seams, four thread over-lock for extra strength in hem seams. Great for: basketball, track and field, marathons, surf and beach wear Launduring Instructions: Use minimal laundry products for they can clog the fabric, which inhibits the wicking effects of the fiber. It is recommended to use bleach free and scent free detergents. Also never use dryer sheets or fabric softener, for these may also clog the pores of the fabric.