BW&reg; Large Size LiPo Battery Safety Guard Bag Safe Case Sleeve for Charge & Storage (Large size) RC Lipo Lithium Polymer Battery Safety Guard Charge Bag The safest way to charge and store your lipos. Protect your workshop, family and home from the hazard of lipo charging. This is a fireproof bag, designed to stop and contain any fire caused by incorrectly charging or poorly functioning lipo packs. Material:Fiber, Size:22.5 x 30cm / 8.85 x 11.8 inch