• Reusable surviballoon with a unique two-layer design: the outer layer is made of strong nylon with PU coating which protects the inner air cell where gas will be retained
• The use of an octopus or air gun can effortlessly inflate the SB-5, and special opening will automatically trap all incoming gas when full
• The opening end of SB-5 contains counter weight to help its staying upright in the water

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