Feature: 1. 2 packs design, every pack includes 2 pads for speakers. 2. 27 * 14cm large usable area, suitable for medium size speakers. 3. Made from high-quality foam with high density, can reduce reverb and flutter echoes, creating a perfect environment you want. 4. The sound isolation foam is also shockproof, ensuring stable sound output. 5. Easy and convenient to use, just put them under your device and then enjoy the wonderful music. 6. Sloped design for differnent angles, choose the most suitable one to achieve best sound quality. Specification: Features： 2 packs design, every pack includes 2 pads for speakers. 27 * 14cm large usable area, suitable for medium size speakers. Made from high-quality foam with high density, can reduce reverb and flutter echoes, creating a perfect environment you want. The sound isolation foam is also shockproof, ensuring stable sound output. Easy and convenient to use, just put them under your device and then enjoy the wonderful music. Sloped design for differnent angles, choose the most suitable one to achieve best sound quality. Specifications： Color: Black Material: Foam Usable Area: 27 * 14 cm/ 11.8 * 10.6inch Signle Pack Weight: 41g/ 1.4oz Package Size: 30 * 14 * 4cm/ 12.9 * 5.5 * 1.5inch Package Weight: 90g/ 3.1oz Package List： 2 * Sets of Acoustic Isolation Foam Note: The product is shipped after compression, and it takes some time to recover rebound before use. Package List: 2 * Sets of Acoustic Isolation Foam Note: The product is shipped after compression, and it takes some time to recover rebound before use.