Lightweight and pocket-sized! The signature rain jacket, designed to protect you from extreme rainy conditions. Made with a double layer membrane fabric (5000 mm water column) and fully thermo sealed. Incredibly light and pocketable, It fits in its own back zipped pocket so that you can carry it in your back pocket and use it whenever rain catches you! WaterproofingThis garment is 5,000mm waterproof. This means that a test has been 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 water would start to leak through the fabric. So in theory, you could stand out in the rain until 5,000mm of rain fell before you would start getting wet. Features Pocket Double layer membrane Temperature range: +5/+15.