The S-Tek Pro System's revolutionary design is built tough and loaded withfeatures, helping to make your time at depth more comfortable and enjoyable.Designed for both utility and comfort, this system features a 3D formed backplate with harness that includes adjustable TEK LOC shoulders to ensure a snugfit and molded Monprene pads that provide cushioning without creating bulk orinherent buoyancy. For convenience, the system is sold as a comprehensive kitincluding the Pro Harness with Back Plate, 30lb Donut Wing and Single TankAdapter.