This is the Hollis Solo S LX Wing Tech Scuba Diving BC/BCD with Weight System Scuba Diving Package Features: Hollis S LX Series Circular Design Wing Bladder for Tech Diving BC/BCD Assemblies: Welded flange and one piece retainer for servicing without the need for tools Outer shell constructed of HD Laminated 1680D Cordura 420 nylon internal bladder Centrally located elbow to avoid tank valve/regulator interference Lower left pull relief valve Cam band slots Lifetime Warranty Hollis Solo Harness System for Technical Diving Systems Streamlined design enhances comfort with less drag Continuous one piece harness system limits failure potential Stainless steel D-rings and cam buckle included Removable shoulder pads accept stainless steel D-rings System weight (harness only): 1lb (0.45kg) Hollis Back Plate Back Pad with Bookscrews Back pad for ultimate comfort with a back plate 6 Book screws to attach pad to plate Stash lift bags or marker buoys between plate and pad Fits all Hollis backplates Durable Long Lasting Construction Sewn and Taped Edges Hollis Cam Bands for Tech Diving Harness Systems in Stainless Steel - Includes 2 Hollis 10lb Weight System for LX-Elite, HTS2 and Solo Harness Systems - Includes 2 Hollis Solo S LX Wing Tech Scuba Diving BC/BCD with Weight System Scuba Diving Package.