Rubber sole 1.Comfortable fabrics: breathable and smooth fabrics, vamp has very good flexibility. Like socks, soft and comfortable. 2.Portable design: smooth neck design to prevent wear when wearing our water shoes. It’s very convenient to wear and take off. 3.Perfect material: super light weight elastic material, strong flexibility, compressible, easy to pack, let users easily put on and off, give you a comfortable feeling. 4.Safety: the sole is made of TPR material to protect your feet from sharp objects. The non-slip rubber sole is flexible but thick enough to protect your feet from stepping on rocks and stones. 5.Ideal for any activity: perfect beach, swimming, surfing, swimming pool, sailing, kayaking, windsurfing, yoga and any other activity.