We are offering double bubble insulation for heatness. roll size (w x l) 1.2m x 40m bubble size 4mm x 10 mm total thickness (mm) 4.5 to 5 mm reflection ratio 95% thermal resistance emissivity 0.04-0.05 temperature range -122 ℉ to 230 ℉(-50°c ~ 110 °c) minimum order quantity 5000 mtrs (india) container load (export) aerolam decopack thermal insulation material is basically constructed with the 1 layer of air bubble film laminated with colored metalized film on one side.