Also known as lifer saver donut or kisby ring, Lifebuoy Ring is made using polyethylene and is of great significance in marine activities. So this product holds a great efficiency in providing buoyancy to the person inside water. It is majorly an aid given to the drowning person to help him attain a support and buoyancy against water pressure. The product has has been included in one of the important helping agents on cruises,ships boats, etc. Lifebuoy Rings are either stuffed with air or with polyurethane foam and can be availed in different dimensions.