M size knee support made of breathable mesh material. - Color: Black - Material: Mesh - Design: Knee support, designed to fit the shape of the knee - Features: Good breathability, designed to reduce pressure, and the springs on the sides make bending and stretching easier. - Size: M size ※ This is for one piece, not a set for both left and right knees. How to measure size: Measure the circumference of your thigh 10cm above your knee. Size: M: Thigh circumference 10cm above the knee is 33~41cm Thank you for viewing.