A non-marking multi-directional rubber outsole with KEEN Static Lace-lock fastening system is ready for anything. The top is made of waterproof and washable polyester fabric. Extremely light and flexible non-lubricating rubber KEEN.FUSION outsole. Outsole with a multidirectional pattern that ensures good grip on different surfaces. Easily adjustable and rubber fastening that holds the sandals securely. Closed heel. Adjustable velcro fastening. The side with the chip is more open for small children to put on comfortably. KEEN.PROTECT patented toe protection. ECO ANTI-ODOR - probiotic technology that reduces sweat odor in a natural way. Machine washable.