Hillsound Super Armadillo Gaiter SuperFabric| DWR treatment Waterproof to 20,000mm Breathability rating: 6RET, 15.000 + g YKK zipper brings the gaiter close to the leg DWR coating will remain intact for up to 50 washes X-Small: &lt;6 US Men's; Small: 6-8.5 US Men's; Medium: 8-10.5 US Men's; Large: 10-12.5 US Men's; X-Large: 12-15 US Mens