This is a Slim Fit all-in-one diaper fitting babies approximately 8-40lbs. Our Slim Fit line does not mean small, the short wings prevent droop from the waist panel, and is more user friendly with simplified snaps. Our Slim Fit style (previously One Size) has been a customer favorite for years, and our top selling style diaper. Recent Changes The NEW athletic wicking jersey edge on inserts prevents inserts from shriveling after laundering. The new 3 by 4 rise setting adapts to smaller babies, sooner. Dirty Closure Snaps The extra 2 snaps on one tab allow to roll your cloth diaper to secure and store sanitarily. Simply fold the diaper (similar to rolling a disposable diaper), then fasten the snaps securely.