Emergency Rescue Float Vest XH-20 Specification of Emergency Rescue Float Vest XH-20 1. This vest is made of high density rubber (NDR), with its soft structure and water-proof material resisting the cold. 2. Its fine stability floating material makes it easier to float on the water. 3. It is an essential equipment for water emergency rescue. 4. It has adjustable straps suitable for both adults and children.