This liner is a one piece suit made of 92% recycled material. It is a four way stretch material that keeps you warm and wicks moisture away from the skin to keep you comfortable and dryer all day. It is a paddling specific design allowing comfortable movement while fitting nicely under a drysuit or other layering pieces. Double-pull front entry zipper Front relief fly Flat lock seams Fabric: 170 gm 4-way stretch Polartec Power Dry