X-SPAN is a super stretchy foam rubber that is ultra soft and comfortable. It allows the user to be comfortable and warm in the water which translates to having more fun. These X-SPAN Unisex Shorts have flatlock seams that provide for a smooth interior and exterior surface to ensure maximum comfort and durability. Anatomically designed with an extended lumbar to provide maximum coverage while in use. A reinforced screened seat area helps provide for a long life to traditional high wear areas.