Aqualung Zuma is an outstanding Buoyancy Compensator. Zuma features a rolled neoprene collar, sculpted, padded shoulders and padded spine and lumbar supports for maximum comfort. It also uses a clever tank support system eliminates the hard back plate thus removing a lot of weight from the BCD. The Zuma's designers also lowered the tank band and integrated it with the waist band while adding a valve strap that pulls the tank towards the diver's center of gravity. This makes for better weight distribution and a more stable, comfortable fit. The Zuma makes use of a bladder retraction system that pulls the bladder in during deflation. This, coupled with proprietary flat valves help to lower its drag at depth.The Zuma features integrated weights and keeps them locked in with the SureLock II. This system is the epitome of simplicity and its weight pouches just slide and click securely into place. SureLock II also adds an extra layer of safety to your dive by allowing you to quickly ditch your weights in an emergency with a single pull.Received this one new as a gift unfortunately not the right size with tags and packaging were removed and discarded.Great gift for a SCUBA diver for graduation, Mother's Day or Father's Day.