Product Description Good Ventilation Raw Fabric Fast Drying Corrosion Resistant Fabric. Rubber fasteners can be adjusted freely. Anti-slip outsole Rubber outsole enhances anti-slip friction and provides excellent grip on various terrains. Finger-sealed design protects the toe lid from damage caused by stone, tree roots and solid objects. Adjustable closure The adjustable Velcro strap at the back can be adjusted quickly and completely for a perfect fit.