Wild Country Boost Climbing Harness X-Small: Hip: 27-31.5"; Thigh: 18.5-22" Small: Hip: 28.5-35.5"; Thigh: 19.5-25" Medium: Hip: 32-39.5"; Thigh: 21.5-25" Large: Hip: 35-43.5"; Thigh: 23-27" Weight: X-Small: 11.4 oz; Small: 12.67 oz; Medium: 13.27 oz; Large: 14 oz