Seaquest Aqua Lung Replacement Sure-Lock II Weight Pouch Available in 10, 15 or 16lbs (4.5, 6.8 or 7.3kg) Weight Capacities in Each-Pocket Easy to Load Design Remains Secure Until-you-want to Release-It Sure-Lock II Weight Pockets Align-Themselves: Insert-the-Pocket Until-It "Clicks" Simple, Single-Pull Release to Jettison Weights in an Emergency