Oceanic's QLR (Quick Lock Release) 4 Weight Pockets are designed in such a way as to stay in place throughout the whole dive without shifting around and affecting your buoyancy or position in the water. The weights are secured with a simple yet effective hook-and-loop closure. All you need to do is pull or push on the handle to remove or fit the weights into the BCD. 
The weight pockets are made from 1680-RG, and 1000 Cordura fabric for durability. Additionally, the Pouches come with a Velcro closure to secure the weights.
The pockets are sold in a pair. Each pocket holds up to 10 lbs (4.5 kg) or 20 lbs (9 kg) total.    
The pockets are designed for use with Oceanic Excursion, Ocean Pro, and Hera BCDs.