OMS SideStream 27 Sidemount BC System A11518087 OMS Sidestream Sidemount Wing with 27Lb ? 12.5 Kg Buoyancy  Lift. Split Backplate design is a Simple & Efficient Sidemount Style Harness. Fully adjustable, One Size Fits All by simply adjusting the?50mm - 2 Inch Wide Flexible Webbing.?The Sidestream 27 features a fully adjustable Critch Strap, Spine Weight Pocket System holding up to?6.8 Kgs ? 15 Lbs of Lead Shot Soft Weight Pouches, Buttplate with 2 Offset D-Rngs for Cylinder Mounting Clips & 2 Waist mounted D-Rngs. In addition to a Redundant Air-Cell with Oral Inflator and dedicated Over Pressure Relief & Pull Cord Exhaust Valve. Manufactured from the highest quality 1000 Denier Anti Fray Black Nylon, with Flexible 50mm ? 2 Inch Webbing & 3162 Marine Grade Stainless Steel D-Rings, Tri Glide Adjustment Sliders & Waist Cam Lock Buckle.