Extinguish Fires: Safe to use on liquid, grease, and biofuel fires, not use on electrical fires A flexible flame-retardant fiberglass blanket can be wrapped around a person or thrown over a fire to smother flames Unlike a traditional fire extinguisher, it does not expire, does not require training, and does not produce fumes or make a mess 40in x 40in. 4 Pack. The size is large enough to throw over a grill or campfire The fire blanket comes with an evident bright red storage pouch