Upgraded Acoustic Panels: This set includes 10 self-adhesive soundproof panels, each measuring 47.24x11.81x0.35 inches. The larger panel design helps to disperse more noise and eliminate echoes more effectively than smaller panels. Excellent Sound Absorption: The sound waves interact continuously with the high-density 100% polyester, causing the sound to gradually lose energy, which reduces echoes and absorbs noise. Self Adhesive Design: Easy DIY installation just peel and stick no extra purchases needed. Transform your space in a single day without any special skills. High-Density Material: Made of 100% polyester for superior sound insulation compared to foam panels.