Men's Slimming Waist Cincher Trainer Trimmer Belt Abdominal Girdle Chinese Tag M and L runs small. They are about US XXS. Unique design to offer abdominal support and reinforce the lower back Help to protect the spine from backaches and muscular fatigue Tag M:Waist:18-24.2''/46-64cm; Length:11''/28cm Tag L:Width 19.6-27.4''/50-70cm; Length:11.4''/29cm