The Physiologix Essential Range is designed to deliver light support and maximum comfort without restricting movement• Enhanced lightweight, breathable, durable stabilizer that provides support whilst helping to prevent re-injury• Ergonomic design to provide uniform support & compression• 360° Stretch, contour design prevents slippage & ensures a proper fit• Re-enforced edges for durabilityMeasure around the centre of your knee for your size*Small (S) - 12-14""/31-36cmMedium (M) - 14-16""/36-41cmLarge (L) - 16-18""/41-46cmExtra Large (XL) - 18-20""/46-50cm*Please note: Sizes are for guideline purposes only and may vary slightly