These Optimist buoyancy bags  are made of high quality flexible pvc foil. Suitable for all non IOD’95 Optimists and other classes. Can be used inside GRP tanks or with straps. Size inflated 24 cm x 92 cm, content 43 liter, color white.
Please note, not to over inflate the Optimist buoyancy bags. When buoyancy bags are properly filled, they will be soft to the touch. Over inflated Optimist buoyancy bags may burst when heated up by the sun or rising temperatures. Make sure there are no sharp points in your boat that would snag or puncture the buoyancy bags.