The Boon RIPPLE Bathtub Mat offers a safe, kid-friendly alternative to traditional bath mats. Made without BPA and phthalates, the Boon RIPPLE mat is also large enough to ensure your baby is on a safe, non-slip surface as they crawl across the tub. The mat features drain holes that expel water and a convenient built-in hook for hanging, so you don't have to worry about trapped water turning into mold as weeks and months pass.