Division 5.3

The foam must be two sheets of 25 mm thick Confor™ foam type CF-45, or equivalent. The skin must be a 1,5 mm thick fibre reinforced rubber sheet. The foam and rubber skin together must weigh 0,6 ± 0,1 kg (this excludes any reinforcement, mountings, etc. which are used to attach the rear edges of the rubber skin to the rear member). The foam and rubber skin must be folded back towards the rear, with the rubber skin attached via spacers to the rear member so that the sides of the rubber skin are held parallel. The foam must of such a size and shape that an adequate gap is maintained between the foam and components behind the front member, to avoid significant load paths between the foam and these components.