These bottoms are waterproof thanks to the robustness and coating of the fabric and sealed seams. A fabric's waterproofing is determined by measuring its resistance to the pressure exerted by a water column, measured in mm (test based on ISO 811 standard). Our material is resistant to the pressure from 2,000 mm of water. The finished product is approved in a shower test in the lab, where we recreate the conditions of an average downpour: 60 L water per square metre per hour for one hour.