Large closed cell foam sheets Approximately 2m x 1m x 50mm Actual size 2030 x 1060 x 50mm New with minor scuffs which does not effect it's performance. Cheapest available Collection available from Leighton Buzzard or Watford. Polyethylene closed cell foam is a material with many different properties waterproof because of it’s closed cell structure it makes it impossible for water to migrate through it so as a buoyancy item it’s perfect. Thermal closed cell foam works in many ways just like a thermos flask because it keeps warm things warm for instance place your hand on it and with in seconds you feel the heat from your hand being returned straight back at you. Sound insulation again because of its structure and the different densities that it comes in, ... Onsale for £ 65.00 and shipping from Bedfordshire...read more...