Product Name: Knee support that firmly supports and protects the knees, joints, and ligaments. Materials: Rayon, silica gel, rubber, etc. Country of Origin: China Sizes: 【S】Knee circumference 30-36cm, Recommended weight 40-55kg Set Contents: 1 set of knee pads (2 pieces) Purchased from Rakuten Ichiba in July for 2680 yen and used for about 2 weeks, but the size didn't fit, so it has been left unused. The packaging is also gone, so I'm selling it at a low price. No claims and no returns accepted.