This is the Aqua Lung Surelock II Weight Pocket System for Rogue and Outlaw Surelock Weight Pocket System - sold individually

Features: 

• For the outlaw BCD specifically - Complete system that connects to the ModLock™ connectors that enables you to insert the included surelock weight pockets for full weight integration. 
• SureLock II™ Weight System (patented) - allows you to easily insert the weight pouch and an audible click" lets you know the weights are secure in the BC.
• Once engaged, the weights can be released with a firm pull of the handle Pockets come in pairs and include the Modlock sleeve system that the pockets lock into - this system is purchased seperately to the BCD. 
• SureLock II™ Weight System (patented) - allows you to easily insert the weight pouch and an audible click lets you know the weights are secure in the BC. Once engaged, the weights can be released with a firm pull of the handle. "