Aluminium rib-frame design - The bow and stern are composed of built-in aluminum ribs for improved tracking. Versatile - Can be set up as self-bailing in bigger waves or close ports in calm or cold water. Easy setup - Simply unfold, inflate, and attach the seat. This watercraft has been pre-assembled at the factory. Comfortable - The high-support, adjustable padded seat provides comfort for hours of paddling. Durable - The heavy-duty PVC tarpaulin material provides extreme puncture resistance. It features polyester fabric sandwiched by layers of vinyl, creating a durable and strong outer cover.