The JT-65D from IST is a complete Tec rig for twin tanks. It comes with IST’s deluxe harness and a 65-pound-lift air cell that offers both primary and redundant air bladders, each with its own inflator hose and relief valves. Under water, the harness’s wide shoulder straps spread the load of a twin tank system nicely, and the multi-valve horseshoe-shaped air cell allows for pinpoint buoyancy control. ScubaLab testers were impressed with the rugged durability and comfortable fit of the JT-65D Tec BC. Click here for more information. Find this product at your local IST dealer.