Ergonomic design The engineering design of the hollow foot bed can effectively support the foot, the forefoot and the rear high design, fit the foot curve and the pelvic floor without tiring the feet when walking Thickened soft sole \u0026 suspension design sole, the lifting effect of the thick sole is twice that of the ordinary sole, giving the feet the ultimate comfort and pain relief. About 30 degrees of forward tilt head protection design, front and rear shock absorption, reduce foot damage Non-slip durable wavy non-slip outsole Waterproof and non-slip, giving your feet good grip, no slippage, and good balance. The wavy design