The Stone Island 4100004 Membrana 3L TC Hooded Jacket in Navy showcases the brand's technical expertise. crafted from a lightweight three-layer performance fabric that combines an opaque nylon outer shell with a breathable. water-resistant membrane and an imperceptible polyester base. Garment dyed for a rich. distinctive finish while preserving the membrane's performance properties. the jacket is completed with an anti-drop treatment for added protection in changing conditions.