This is a ZAMST JK-2 knee support, size M, designed to reduce stress on the knees during jumping sports with its unique padding. It's for either the left or right knee. My child only used it once, so it's been kept at home after house cleaning. It's almost unused and in good condition. Original price: 5,720 yen 【Product Description】 Manufacturer: ZAMST Product Name: JK-2 (Knee Support, for either left or right knee) Size: M Knee circumference (16cm above the center of the kneecap): 43-46cm *Measure the circumference of your thigh 16cm above the center of your kneecap while standing normally. 【Product Details】 ◾️Accurate compression below the kneecap The unique two-layer jumper's pad provides accurate compression, reducing stress on the lower knee. The compression can be easily adjusted with the under strap. ◾️Comfortable fit Power double russell fabric, which is breathable and provides moderate compression, offers a comfortable fit and hold. Bending and straightening the knee feels smooth with minimal discomfort. ◾️Accurate compression around the kneecap The semi-circular patella pad gently and accurately compresses the kneecap, and together with the H-shaped jumper's pad below the knee, it enhances knee stability. Please note that the item will be packed without the box for shipping purposes. Also, please refrain from price negotiations. Please consider purchasing this item at this opportunity!