3 in 1 Soundproofing Foam Self-adhesive - Eggcrate Acoustic Closed Cell Foam Panel

These sound dampening panels come in different sizes and coverages, with high-density triple-layer material for noise reduction and heat insulation. They are waterproof and suitable for various applications.

• The description claims the 3-layer foam can muffle and dampen sound better than thicker ones.
• The description claims the closed cell foam has a higher R-value and is waterproof.
• The description claims the sound blanket is flame retardant, flexible, odorless, and non-toxic.