Reusable safety sausage with a unique two-layer design. The outer layer is made oftough nylon with water-resistant PU coating, which protects the inner bladder. The taped edge prevents the outer layer from fraying. The inflate underwater, simply use an octopus to release air into the balloon s opening, and the air cell s special enclosure will automatically trap all incoming gas. The SB-5 has counter weights to help it staying upright. Balloon length @ 137cm (54 )<br>