MEASURE CIRCUMFERENCE OF KNEE FOR SIZE SELECTION. To ensure the best fit for our knee supports its best to measure before purchase, sizes: Small 29 - 33cm. Medium 33 - 37cm. Large 37 - 41cm. X-Large 41 - 46cm. XX-Large 46 - 51cm. See picture for guidance. IMPROVING BLOOD CIRCULATION. A knee compression support helps to provide oxygen and nutrient-rich blood to your knee joint. The better your blood circulation, the more oxygen gets to your muscles and joints therefore taking you the longer to fatigue. KNEE SUPPORT FOR MEN AND WOMEN: The Bearhug knee support sleeve comes in a range of 5 sizes ensuring the perfect knee brace support for women and men of all sizes. FEATURES BAMBOO CHARCOAL: Our unique 'Bamboo Charcoal' qualities are scientifically proven to increase blood flow by 40%. While retaining body heat which reduces the recovery time of sprains, injuries, muscle soreness and swelling. THE KNEE BRACE THAT OFFERS COMFORT & SUPPORT. Bearhug knee sleeves offer compression and support to the knee, leg and thigh. This high - quality, versatile brace can be used for a range of conditions such as arthritic knee pain, sports injury, ligament injury, while also for support during physical activity such as running and cycling.