The OS1st Performance Socks and Braces wash bag can be used to wash any OS1st product replacing the hand wash instructions. The wash bag allows the detergent to pass through for easy rinsing. The mesh wash bag measures 8” x 8”. It’s made of strong, lightweight, polypropylene nylon that’s rip- and tear-resistant with double-stitched seams for extra stability. The pull-lock closure provides security that items won’t spill out. It comes in black. The nylon mesh wash bag is the perfect accessory to any OS1st product. OS1st products should be washed on delicate cycle and air dry.