The 4-In-1 Warming Comfort Tub'S Design Helps You Keep Your Growing Baby Comfortable During Bath Time. From Infant Through To Toddler, This Modular Tub Creates A Secure And Comfy Environment For Them As They Get Clean. The Cleverly Designed Infant Insert Features A Special Water Catch Tray That Allows For A Steady Stream Of Soothing Water Down Your Baby'S Neck And Back. It Also Cradles Newborns At A Gentle Incline And Easily Switches To A Medium Incline For Older Infants. As Your Baby Grows, Remove The Insert And The Tub'S More Upright Incline Easily Supports An Extra-Wiggly Baby During Bath Time. The Tub Later Provides The Perfect Perch For A Toddler Having Bath Time Fun. The Tub Is Designed To Fit Most Single And Double Sinks, And Can Also Be Used In An Adult Bath Tub.