Here's what other sites are saying:
The perfect choice for SUP racing or long-distance SUP touring, the MTI Race 1 belt is so compact you'll forget you're even wearing it.. . . . Body-hugging design holds the pack close to your core while paddling; 2-inch webbing is soft and won't dig into your skin. 3D mesh padding is soft, cool, and quick drying; mesh buckle protector flap prevents chafing. Compact inner bladder with fold lines is less bulky, saves weight, and repacks easily after deployment. Easy-to-install 24g bayonet-style CO2 cylinder inflates bladder in seconds when cord is pulled. Uses premium Halkey Roberts inflation mechanism with single indicator point. Clear window lets you easily check to make sure the inflation mechanism is ready. Adjustable webbing strap connecting the bladder to the belt provides a better fit when inflated. Zippered storage pocket on top lid keeps small items secure. Multi-loop attachment system carries a water bottle and essential gear. Includes signal whistle and whistle holder. Adjusts from 30-52 inches to fit a wide range of paddlers over 80 lb. (and at least 16 years old).