Small yet studry, it always accompanies you. Pull the trigger to inflate the Restube buoy immediately – for buoyancy and visiblity for you and others. Resuable by screwing in a new CO2 cartridge. Restube is not a substitute for a life jacket or personal flotation device. It doesn’t guarantee against drowning. User action is necessary to inflate if needed. For experienced swimmers from the age of 10 years.