Weights and weight belts are used to carry the weight that allows you to descend. There are nylon weight belts and weight pocket belts. Nylon belts use traditional molded lead weights that are threaded onto the belt. This is what you will most likely use in a dive class. Weight stops should be used to keep the weights in place on the belt. This could be as simple as a knot in bet. This system works very well and is the least expensive. The weight pocket belts have four to six pockets that accommodate lead-shot bags. These are sometimes more comfortable but are usually more expensive. There are various size lead-shot bags that can be mixed and matched in the belt.
Cost: $15 to $50