This mast float significantly reduces the risk of inversion. It’s a very clean and light design that contains 2 inflatable tubes and is made from a single fabric. The mast float slides into the sail track and can be connected to the sail with the eyelets at the top and bottom. The single fabric ensures that hoisting the sail is a smooth operation.Fully inflated, the mast float is 105 cm (41.3 inches) in length and can be folded flat to 18 by 27 cm (7.1 by 10.6 inches) for ease of storage.Please Note: this product is meant for small dinghies only and does not guarantee 100% protection against inversion. Using it is one’s own responsibility. The product is inflated by mouth.SpecificationsNumber of tubes: 2Tube length: 80 cmTotal buoyancy: 8 LCapacity: 4 L