... foil foam underlay. 1: 2mm Silver EPE,1.1m(W)X17M(L),diameter/roll23cm,thickness:2mm, density:65g/m2 ... 1m(W)X17M(L),diameter/roll26cm, thickness:2.5mm, density:86g/m2, Package: PE bag.3: 3mm Silver ... 1m(W)X17M(L),diameter/roll26cm, thickness:2.5mm, density:86g/m2, Package: PE bag.5: 3mm Golden ... L),diameter/roll29cm,thickness:3mm, density: 91.4g/m2, Package: PE bag. (1) EPE foam underlay(2) XPE, EVA ...