The Physiologix Essential Range is designed to deliver light support and maximum comfort without restricting movement. The range features an enhanced lightweight, breathable, durable stabilizer that provides support while helping to prevent re-injury. The ergonomic design provides uniform support and compression. The 360° stretch, contour design prevents slippage and ensures a proper fit. The re-enforced edges add to the durability. Measure around the centre of your knee for your size. Women's sizes are available in Small (S) - 12-14", Medium (M) - 14-16", Large (L) - 16-18", and Extra Large (XL) - 18-20". Please note that sizes are for guideline purposes only and may vary slightly.