VAPOR BARRIER -Unaffected by humidity and moisture, can be used indoor/outdoor.
SUPREME QUALITY - 3mm closed cell polyethylene FOAM ( not a cheap bubbles) sandwiched between highly reflective Engineered Foil on both sides. Easy to install, easy to cut and easy to clean, Strong but lightweight.
SOUND BARRIER - excellent soundproofing material.
NON TOXIC - will not irritate skin, eye or throat. Non allergic.