To ensure a perfect bum saver pad fit, measure the circumference of your waist and match to the sizes listed below: * S - Small Waist 26" - 30" - M - Medium Waist 29" - "33" - L - Large Waist 32" - 38" - XL - Extra Large Waist 36" - 42" * Lycra body provides a cool and snug fit - Removable shock absorbing EVA foam pads make them customizable and easy to wash - Broad tailbone and butt padding to protect your most important assets * Convenient, small inside pocket for your mouthguard, ID, cash, etc. - Light and flexible for total overall comfort - Short leg length