The Volcom Ekin Jacket is equipped to give you an awesome level of performance in all but the worst conditions. The 2-layer shell is waterproof, breathable & backed up with taped seams where you need them most & Volcoms Zip Tech technology to make sure that the powder stays on the hill. There is a range of innovative features on hand to ensure that you are comfortable & well ventilated, & enough pockets to take care of all of the essentials from your goggles to your Mp 3 player. Features V-Science 2-Layer Shell Critical taped seams Zip Tech 2- Way adjustable quick cinch hood Super suede chin guard Mesh lined zipped vents Adjustable powder skirt w/stash pocket V-Science 2-way cuff system Brushed tricot lined handwarmer pockets Pocket access hem cinch Goggle pocket Noise pocket Stone ticket ring Glossary Zip-Tech Zip-Tech technology means that you can zip the powder skirt of any Volcom jacket to any volcom pant. The system keeps the snow out & the heat in with no restriction of movement. Tricot Tricot is a thin knitted fabric that provides extra warmth & padding. Waterproof Rating This is measured & expressed as Hydrostatic Head in millimetres (mm). To find out the Hydrostatic Head of a fabric the manufacturer will take a clear tube & clamp their material over the bottom end. They will then fill the tube slowly with water & watch to see how high the column of water can get before the material lets drips through. The higher the hydrostatic head, the better the water protection. The European Standard a fabric must meet to be classified as waterproof is a Hydrostatic Head rating of 1500mm, & on average, outerwear fabrics tend to have a hydrostatic head of 10000mm & above. Breathability Rating Breathability is measured as a rating in grams of how much vapour a square metre of fabric will allow to pass through in 24 hours (g/m 2/24). It should be noted that breathable fabrics do not stop you sweating & care should be taken as to clothing worn beneath waterproof/breathable shells. High quality base layers & fleece or insulated midlayers should in themselves draw vapour from the body & pass it outwards, thus allowing the outer fabric to do its job. Cotton clothing should never be worn as part of a performance clothing layering system.