This extremely waterproof and breathable membrane is laminated between layers in select jackets and pants from Spyder. Aside from its weatherproofing, this material is also utlra-thin and extremely durable. These qualities result in a fabric that is very lightweight and pliable, with great stretch recovery that helps to keep the garment performing like new, even afer seasons of use. This technology ensures that your Spyder kids outerwear performs great all day, every day, for the life of the jacket or pant.