Boon Soak 3-Stage Infant BathtubRestore that new baby smell with the Boon Soak 3 Stage Infant Bathtub. With an adjustable bump and contoured back, this compact tub suits reclining newborns through seated toddlers and fits in most double sinks. It also has you covered with a color changing temperature gauge that helps you determine the right water temperature for your child. Specifications Accommodates your growing child from newborn to toddler. Adjustable bump for positioning.