Boss Bands are made with a triple-layered core that absorbs the friction on the wrists that causes rips and bruises. Not only do our wristbands keep your wrists rip-free, but they also add a little extra support to help keep your wrists aligned and stable! Although each athlete is built uniquely, we offer a guideline for helping get the perfect fit. Women Small (up to 60 pounds) Women Medium (up to 85 pounds) Women Large (over 85 pounds) Women XL (over 135 pounds) Men Small (up to 60 pounds) Men Medium (up to 90 pounds) Men Large (up to 110 pounds) Men XL (over 100 pounds