1.Material: It's made of 600D poly and PE 2.Kneecaps to kindly protect the knees 3.We've passed ISO9001 Quality Certification Durable plastic cap knee protector1. Size: Fit for all users2. Material: It is generally made of durable 600D polyester and PE cotton3. Durable velcro and elastic to fasten it on your knees and will not loose4. Comfortably to protect your knees and prevent knees from kinds ...