Mares Guardian ErgoTrim BCDThe ERGOTRIM technology allows the diver to adjust buoyancy no matter the diving position. The ERGO command can be used like a classic inflator by an instructor when teaching, but will work as an air trim when in its dedicated holder. The aircell is separated from the shoulders, meaning greater comfort in the shoulder area when inflated. High lift aircell with winglets. Monoplate backpack fits single or double tanks. 50mm swivel buckles. Stainless