Features: brand new and high quality Built-in silicone cushion: effective cushioning and decompression to strengthen the for protection of the knee. High elastic compression: the use of three-dimensional weaving technology to better compress the knees and muscles. Exquisite sewing: The double-track sewing is used to make the threading for stronger, not easy to snag, and has a long service life. Dual-channel silicone anti-skid strip: enhances stability, absorbs decomposition pressure, protects knee joints, and is not easy to slip off. The comfortable and breathable material can help the knee better heat dissipation and ventilation during exercises, absorb sweat during exercise and keep the knee cool. Specifications: Material: Polyester Color: Black/Blue/Gray/Red Package Weight: approx.150g Size Optional: for M/L/XL Size for M L XL Perimeter(for cm) 38-43 40-46 42-48 Perimeter(inch) 14.96-16.92 15.74-18.11 16.53-18.89 Lower Mouth Circumference(for cm) 32-36 33-38 35-40 Lower Mouth Circumference(inch) 12.59-14.17 12.99-14.96 13.77-15.74 Package Includes: 2Pcs x Kneecap note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!