1. Midsole rebound durability: measured 1000km of rebound to maintain high rebound. 2. Buit-in "airbag": reduces the impact of gravity when touching the foot and provides instant impact protection. 3. plus "air damping" "energy entropy" touching the ground instantly squeeze the airbag, through the narrow tube channel, forming a pressure power. 4. Embedded "bucket TPu" like a racing bucket seat, the heels deeply protected against lateral twisting. 5. Four "tyre outsoles": the original resin rubber is approximately equal to the density of the tire, wear-resistant and anti-slip, with a deep grain for good grip. 6. Stereo wicking rate: The upper insole is breathable and wicks away sweat for dry, comfortable feet. 7. First Class: A wider shoe sandal according to the shape of the national foot, providing a more spacious movement. 8. comfortable: The tongue is crafted with a cotton feel that is skin-friendly, reducing friction and enhancing comfort