My Pool Pal Adult Swim Diapers are specifically suited for adults who require a diaper while swimming. Swimsters effectively contain solids. Constructed to fit comfortably and discreetly under a swimsuit, replacing traditional diapers in water. Designed to not come apart in the water and clog filters. Sizing: XS-18/20-Waist: 22"-34", Weight: 119-141 lbs; S-Waist: 26"-36", Leg: 17"-23"; M-Waist: 30"-40", Leg: 19"-25"; L-Waist: 36"-44", Leg: 21"-27"; XL-Waist: 40"-50", Leg: 23"-29".