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: S-Waist: 26"-36"; Leg: 17"-23"; M-Waist: 30"-40"; Leg: 19"-25"; L-Waist: 36"-44"; Leg: 21"-27".