Footwear waterproofing test
These boots, which have been laboratory and field tested, are equipped with a waterproof membrane that provides optimum waterproofing and breathability. First, the boot is immersed in water while the air pressure inside is increased to check that no bubbles form on the surface. Next, the boots are fitted to a mechanical arm that simulates walking and half-immersed in water so we can test that the inside remains perfectly dry.