Designed to grow with baby in four stages-from infant to toddler-meet the only tub parents need! Filled to the brim with innovative details for baby's comfort, Skip Hop's Wave 4-in-1 Baby Tub includes a supportive sling that can be used in two positions to help make infant bathing easier and less stressful for both parents and baby. As baby grows, remove the sling bather and add the included sit-up support insert to help little ones stay comfortably seated in the tub. Once your little one is able to sit up without support, use the tub on its own. The spacious, yet streamlined design features higher sides for extra splashing space (and extra tub time fun)!