The Firebag-M is crafted from flame-retardant fiberglass material. offering high temperature resistance. fireproofing. and explosion-proofing to significantly enhance the safety of Li-Ion battery pack storage and transportation. Specifically designed for safe transport and travel. it provides substantial protection against fires caused by accidental battery damage or malfunction. Ideal for safeguarding Li-Ion batteries during D-Tap charging. the Firebag-M adds an extra layer of security. However. please note that it does not offer complete protection in the event of a thermal runaway in a Li-Ion battery packs.High-Quality Fibre MaterialsThe high-quality fiberglass material used in Hedbox Firebag-s provides. high-temperature resistance. fireproof and explosion-proof. safety for storage and transportation of the Li-Ion battery packs.Velcro ClosingA strong closing system made by Velcro allows fast and safe opening and closing of the Firebag-s.This provides easy usage and operation on a daily base.Protectiv Material layersIn-side material layer made of Flame-retardant fiberglass. high temperature resistant. fireproof and explosion-proof.