Note--Packaging: You will receive 2Pcs knee brace.Perfect Knee Support for Sport Lifestyles: Most sports activities that involve a great amount of stress on the knee joints like: running, basketball, football, cycling, tennis, hiking, skiing and much more. This knee sleeve can promote muscle recovery and prevent injury, ideal for post-surgery rehabilitation or use in sports. Superior Quality Breathable & 3D Knitting: Made of 3D Knitting technology, contains 75% nylon and 15% spandex and 10% elastic. Designed for flexibility, moisture wicking, anti-odor, breathable & ultra-durableand. Our knee compression sleeve is comfortable to wear while allowing the air to circulate around your knee. Effective Relief and Knee Support: These knee compression sleeves medically engineered to help relieve pain associated with arthritis, aching joints, as well as aid recovery from meniscus tears, ACL , patella injuries and runners knee. Reduces stress and strain, providing stability to weak and injured knees. Anti Slip Silicone At Top Cuff: Most of knee supports are very easy to slip down, but our knee braces won't slip down. Because our knee sleeves not only have fully adjustable straps that can be attached to any exterior point, but also has 2 waves silicone at the top cuff to increase friction, keeps a snug fit at all times. Size M: at a distance of 14cm above the knee,measures the sigh circumference in the range of 34-42cm. at a distance of 12cm below the knee, measures the calf circunmference in the range of 30-37cm. Good for both left and right leg.