The Jelly Sandals are the perfect summer sandal. Super soft, comfortable and great for all their summer adventures. These are waterproof too, making them the perfect sea shoe...walk on the sand and the soles leave a cute panda shaped footprints. Built For Comfort + Ease This sandal is made of 100% BPA free PVC. It comes with a metallic (nickel free) adjustable buckle and with a press button so it is easy to open and close.