Insulated green shell paper, insulation, shock, heat insulation.
For battery packs: 18650 battery pack.
Thickness: 0.2mm.
width : 120mm.
length : 1m.
Note: there is no sponge, though it may appear. It is barley paper which is a cellulosic substance and it has a very strong adhesive on one side. The pictured battery spacers are sold separately. Batteries not included.
