More adjustables and best fitting one size diaper - adjusts to fit newborns and toddlers with 8+ adjustable settings. Most durable one size diaper - made with sturdy snap closures that withstand repeated wear and washing unlike Velcro. Best warrantied one size diaper include a lifetime warranty on snap closure and replacment kits for elastic strips. Incredible cost savings - save up to $35,000 annually over disposables!