I'm selling this because the size doesn't fit. This training power belt features an ergonomic design for easy on and off. - Design: Ergonomic shape - Width: 13cm - Height: 9cm - Stress-free: Easy to put on and take off - Thickness: 8mm - Material: Stainless steel buckle - Size S: 221g - Size M: 252g - Size L: 317g Thank you for looking.