What the GOPASS Technology is? Waterproof footwear that releases air and moisture inside to the outside of the shoes using body weight during walking. A thin, flat water-vapor permeable rubber valve with a thickness less than 1mm located between the upper and the sole converts the entire sole as an air tank and maximizes the displacement. This technology creates remarkable durability and is suitable for combat boots. It is particularly effective for active soldiers who spends a long time wearing combat boots. Waterpoof and air-circulation function improves the internal environment of the combat boots, which helps to facilitate the military operation and individual welfare. Distinctive cushion of this technology offers identical comfort to any outsole materials and fulfills the stability along with durability. Have a special experience and protect your foot with GOPASS technology.