Our cheerful whale shaped Moby tub grows with baby through three stages and offers Smart Sling support The sling locks into two ergonomic positions: higher for full body support and lower for seated support Dual layered mesh and comfort edge construction securely cradles baby from head to toe He slings adjusts to a cushioned seat that comfortably supports babies learning to sit Remove the sling when baby has mastered sitting and easily bathe baby in the spacious tub no uncomfortable plastic bumps Tub 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 plus months; up to 25 lbs) Featuring: Drain plug; Swivel hook for hanging on showerhead, shower bar or towel bar; Non slip interior texture