Adding weight pockets to the BCD cylinder cam band can help prevent excess buoyancy of the cylinder during a dive. By placing hard lead in the pocket on the cylinder, the cam band will keep it from floating towards the end of the dive, providing a more balanced and comfortable experience. In addition, it can reduce the weight on your hips when diving with a weight belt. These pockets are made of durable nylon material and have a zippered closure for added security.