JKJO brand white knee pads, made of nylon with a Velcro closure design. - Brand: JKJO - Color: White - Type: Knee pads - Material: Nylon - Features: Velcro closure Thank you for looking. My child used these in 4th and 5th grade. Size is S. They were used about 5-6 times, but I believe they are still usable. These are used items, so please purchase with your understanding and agreement.