This lipo battery storage box is 100% fireproof. The Inner and Outer surface is made of strong fire retardant fiberglass silicone, which is the most efficient insulative and heat-resistant material. The best way to protect your workshop, home from the hazard of lipo batteries charging, transitting, traveling and storage, helping you and your family far away from the threaten of fire and explosion effectively. Enough space to place multiple batteries as you like. Strong seal velcro strip design and double zipper make the lipo storage bag well sealed. Belt handle ensures a comfortable grip,convenient to use.