Fatmat 24" x 54" x 1/4" Thick Self-Adhesive Automotive Sound Deadening Floor Liner Floor Liner Creates an Acoustical Barrier Between You and External Road Noise. Stops Transmission of Sound - Enjoy a Quieter Ride! 1.0 lb/sf Dense Vinyl Based Polymer Exterior Performs Over Broad Frequency Range & Temperature Range Fused to 1/8 Acoustic Grade Urethane Foam Open Cell Decoupler for Maximum Sound Absorption Backed with 4 mil Pressure Sensitive Self-Adhesive; Aggressive Tack & Good Heat Resistance Black Urethane Finish, STC-26