Their unique open-toe design allows the shark's mouth to open and close as you walk, providing a fun and interesting experience. Their concave sole protects your toes from bumping into table legs or doorsteps. Made from high-quality high-density EVA, these slippers offer excellent flexibility and durability, are lightweight, soft, comfortable, breathable, and waterproof. Their thick, cushioned 2.8 cm outsole provides optimal all-day comfort, ultimate softness, and pain relief. Their non-slip insole increases friction and provides optimal support to prevent slips and falls.