They are fireproof blankets yet more insulation to temperature. Its flexibility allows use as traditional blankets for shelter wounded. Its fibers makes them very recommendable harmless if injured with burns. Textile PVC pouch included. Tested for Flammability (EN532-93) Radiant heat (EN366-93) Convective heat (EN367-92) Tensile Strength: 22.5,13.5 (UNE 40-085 (1)), liquid metal splash (EN 470) .