GroVia swim diapers are the perfect combination of function and fun. Our swim diapers are ideal for the pool, beach, or even sprinkler play! They feature an adorable printed waterproof outer, lined with a soft terry inner that will stop solid messes in their tracks. Stretch side snaps give a custom fit and make for the easiest of clean ups! Swim Diaper Sizes: Size 1: 10-19 lbs. Size 2: 16-33 lbs. Size 3: 25-50 lbs.