P2 THERMOBUBBLE insulation product consists of of a PE layer containing air cells with diameter of ø=10mm, both sides covered with 8 µm MPET films. The MPET films reflect heat radiation while the air bubbles resist heat conduction and convection as well as act as a sound barrier. P2 THERMOBUBBLE is a sound reduction & heat insulation material with high-strength, good tear resistance, and waterproof.