The Bumbo® step stool is playfully designed to look like an elephant’s foot with slip-resistant toenails and it is also lightweight and portable. Adequate Height This Bumbo® step stool is somewhat higher than most, which helps toddlers reach the sink or toilet more easily. Lightweight & Portable The Bumbo® step stool is lightweight and easy to carry around where needed. Age Range The Bumbo® step stool is recommended for babies and toddlers from 18 months to 3 years old.