Flip Potty Trainers are a unique pull-up, pull-down, snap-off, one-size potty training system made with replaceable one-size pads. The outer shell is made of PUL and has detachable tabs made of the same stretchy material we use for the tabs on all Flip and bumGenius products. The tabs attach with snaps. The replaceable one-size soakers are made of six layers of organic cotton jersey (the same fabric used to make Flip organic cotton inserts). The soakers attach to the shell using ultra-soft loop fabric. Each Flip Potty Training Pack includes a one-size cover, side panels, and three one-size organic pads. 18 months to 4 years. 20-50lbs.