Lifeguard Rescue belt Part Number: IRN-NUR-LRB Specifically designed for Lifeguard. Provides independent left- and right-hand units and can be belt mounted, independently activated. Disposable gas filled cylinder. Reusable welded floatation bladder made from 210 denier nylon. -Inflation System: two 25 grams. CO2 cylinders, Chamber: 210D Nylon/0.11mm TPU