Apeks WTX3 Buoyancy Cell Gussets along each side allow for a full 32 lbs of lift without compromising the overall size of the WTX3 4 slots allow it to be mounted to a WTX harness or back plate using and upper and lower nylon cylinder bands 2 pairs of grommets allow the WTX3 to be bolted on if a single cylinder mounting kit is used A 2" wide restriction band at the bottom of the WTX3 allows the cylinder to nestle into the inflated buoyancy cell so it doesn't get pushed away from your body A 2" D-ring on the restrictor band is a convenient place to add accessories like a surface marker buoy