Pilot SOS Tracker Holder “Dan buoy” Model: IRN-NUR-STH Part Number: IRN-STH General Characteristics: Designed to be light weight and compact, reaching 150N buoyancy when fully inflated using a 33g cylinder. The recommended spares are the universal crotch strap and the 33g re-arming pack. Specifications: -Inflation System: 25-gram CO2 cylinders -Chamber: 210D Nylon/0.11mm TPU