Water column pressure is the industry standard way of measuring how waterproof a fabric or garment is. It indicates the amount of pressure a fabric can withstand before water penetrates it and is measured in millimetres. The original testing technique, which the name derives from, involved a testing tube (column) which was filled with x amount of water. The lowest water column pressure for a garment to be considered waterproof is 6000 mm.
At STUTTERHEIM, all of our rainwear has a water column pressure of +20 000 mm. This means that our rainwear is not just waterproof, but it is also designed to withstand even the heaviest downpours.