PRODUCT SIZE : Package includes 2 PCS (1 pair) cooling leg sleeves. Please refer to the size chart in product images. Machine washable with cold water. Contact us for a FULL REFUND if the size is not right for you.BREATHABLE MATERIAL: 80% polyester and 20% spandex. Moisture wicking athletic stretch sleeve keeps your muscles warm thus maintaining the right temperature and flexibility.COMPRESSION TECHNOLOGY: The tight leg sleeve provides enhanced circulation and muscle support to reduce fatigue and improve muscle recovery. The hidden silicone grips keep the sport sleeves in place. The leg sleeves provide medium compression. They are mainly used for sports, such as playing basketball or riding.. If you need very high compression, you should look for medical grade sleeves.Full Knee Length will cover much more area than just right above and below the knee. This knee sleeve extends down to mid calf and up to mid thigh.100% Money-Back Manufacture Guarantee : If you are not 100% satisfied with the purchase, please contact us for a FULL REFUND.