Baby Bathtub with SlingTub grows with baby through three stages: Stage 1: Newborn (0 3 months; up to 15 lbs); Stage 2: Infant (3 6 months; up to 20 lbs); Stage 3: Sitters (6+ months; up to 25 lbs) Mesh Smart Sling provides Comfort Edge support and locks into two ergonomic positions: Upper position: Provides head to toe newborn cradling; Lower position: Supports infants learning to sit Remove sling completely when baby sits upright Swivel hook for hanging on showerhead,