Originally developed for NASA, the MPA Space All Weather Blanket is warmer than wool. It retains 80% of radiated body heat, preventing hypothermia and providing unsurpassed protection in sub-zero temperatures. Features: Warmer than wool Incredibly durable Multi-ply laminated construction makes it the perfect safety blanket Tear and puncture resistant Can be used for emergency signaling Made of a four-ply laminate of clear polyethylene film, a precise vacuum deposition of pure aluminum, a special reinforcing fabric and a layer of colored polyethylene film Item Specifications: Dimensions: 60"(152 cm) x 84"(214cm) Weight: 12 ounces (340 g)