Adams USA Trace Short Style Softball Knee Guard 100% NYLON/SPANDEX 1 single knee guard; Provides superior protection when fielding and sliding Made of premium 3/8 inch thick foam pad; Face is covered in heavy duty polyester/spandex Nylon/spandex fits comfortably around back of leg without restricting freedom of movement Exclusive keyhole cutout allows pad to flex easily; Open back reduces bulkiness behind the knee High-quality protection and exceptional long wear; Machine washable; Made in China