It have double covers made fireproof fiber. Because double covers wrap the battery. it’s more safe from explosion. Also you can use like storage bag normally.
Muchmore Racing Li-Po Safety Bag Ver.4 is made of the fireproof fiber inside the bag. Even if battery burn out, Li-Po Safety Bag Ver.4 keep safe from a fire.
Never leave a charging battery unattended. Always ensure the battery is on a non-flammable surface. Ensure flap is sealed while charging. The Li-Po LiPo Safety Bag Ver.4 is intended to reduce the chance of damage in the event of a LiPo fire.