Material: Neoprene. 7mm thickness. Fit: Tight compressed fitting. If you would like them slightly looser please size up. Go based on what you would wear in shorts.  Design: Support is on the way! The YoungLA knee sleeves are made of high-performance 7mm fabrication that will provide great exercise support, improved recovery time, increase blood circulation and aid in injury prevention. Sold as a pair and can be selected in a range of sizes.