-3MM- Reflective Foam Core Insulation Roll Radiant Barrier White/Foil Faced Refl por | ago 10, 2026Easy to Install & Shape & Bend. Lightweight & Non-Toxic. Foam Core Not Cheap Poly Bubble. Non Toxic / Eco Friendly / Reflects 99.75% of Radiant Heat Transfer. Made in The USA! White one side Foil other side / Water proof.