Question: what does 5k waterproof mean?
Answer: A waterproof garment is measured with two numbers. ... For example, if a coat were 5,000mm waterproof, a test is conducted where a long tube is placed over the fabric and the tube is then filled with water. 5,000mm or 5 metres (16.4 ft) is how far you could fill the tube before it would start to leak through the fabric.