Single Bubble Insulation - White/Foil - 3' X 125' (375 sq ft) Single Bubble Foil / White Insulation - 375 square foot roll (3' X 125') 96% Reflectivity, 0.04% Emissivity, 100% vapor Lowers heating & cooling costs; Improves HVAC system performance High tear resistance Installs quickly and easily with a tape measure, scissors, and staples (DIY)