US Energy Products (AD3) Reflective Foam Insulation Shield, Heat Shield, Thermal Insulation Shield Radiant Barrier 48"x250ft (1000sqft) 3mm Thick (AD3) EXTREMELY EFFECTIVE - reflect 97% of radiant energy, perfect RADIANT BARRIER. VAPOR BARRIER -Unaffected by humidity and moisture, mold resistant , can be used outdoor/indoor. SOUND BARRIER - excellent soundproofing material. SUPREME QUALITY - 3mm closed cell polyethylene FOAM (not a bubbles) sandwiched between PURE ALUMINUM (not a polyester film) on both sides. Easy to install, easy to cut and easy to clean, Strong but lightweight. FIRE RATE - Fire rate Class 1 / Class A, NON TOXIC - will not irritate skin, eye or throat. Non allergic.