Far Infrared Knee Support, Warm & Cozy, Tourmaline, Warms Knee Joints, Tightening, Set of 2 To choose your size, measure the circumference of your thigh 10cm above your knee. Sizes: M: Approximately 28-30cm L: Approximately 40-45cm XL: Approximately 45-57cm This page is for size M only. You can change the size in the comments. This product incorporates particles of far-infrared tourmaline. The knee is one of the coldest joints in the body, so you can expect to feel a difference by continuously warming your knees. By wearing the support, the compression function stabilizes unstable joints and reduces the burden on the joint surfaces. It can stabilize unstable joints during the process of gaining muscle strength and reduce the burden on cartilage. Please use it in conjunction with exercise therapy to increase its effectiveness. (An explanatory booklet on exercise therapy is included.) This type protects the knee joint with warmth and moderate compression, so it can be used for long periods in daily life. Knee joints tend to get cold, so to prevent coldness, start by using it for about 3 hours in the morning and evening. Feel the effects while noticing the difference between wearing it and not wearing it. If you have sensitive skin, wear it over tights or turn it inside out. Shorts Size: M