I bought this because it seemed effective for lower back pain. I only used it for work, not for sports. I no longer need it because my workplace changed, so I'm offering it to someone who needs it. Guards knees and lower back. Provides firm support. CW-X's medium support model. Recommended for trekking, golf, and other sports that put a strain on the body for long periods. - Support areas: lower back, hip joints, thighs, knees, calves - Design: CW-X's unique graduated compression Protects knees from impact during landing. - Adjustable waist drawstring. - Coin pocket. - Logo: Reflective Functionality: Sweat-wicking, quick-drying, UV protection rate of 90% or more, stretch Please understand the above before purchasing.