The Action is a durable Dacron sail that is designed for teaching and rental use. For a great teaching / rental sail in Grid construction see the Future and Motion.Construction:Durable Dacron with vinyl window and rod battens with easy-adjust buckle tensioners.All Action sails are available as a sail-only purchase or as a rig package. All rig packages come complete with sail, mast, boom, uphaul, outhaul, base and extension.*Denotes adjustable head strap