Sedna Shell Jacket in BlackWaterproof, Windproof and Incredibly Lightweight. Whether it be an autumn drizzle or summer storm, the Sedna provides maximum protection with minimal fuss. Built from a durable, lightweight waterproof fabric, your movement is not hindered and comfort is ensured. Adjustable cuffs and hood create the perfect fit, and when the sun comes out, simply stow it into its own back pocket, easy!