Features: Vibration proof design: effectively absorbs vibrations, reduces resonance between the speaker and the desktop, and improves sound quality. Nonslip material: Ensure that the speaker is secure place, not easy to slide, and avoid accidental drop. Low frequency enhancement: optimizes bass performances, making music fuller and providing a better auditory experience. Applicable occasions: Suitable for studio monitors, amplifiers, subwoofers, speakers, portable speakers, etc. Set combination: includes two sponge pad that help eliminate sound bounce back, reduce unnecessary reflection and reverberations. Specifications: Material: High density sponge Color: black Size: approx. 20x14cm/7.87x5.51inch, 3x18x2cm/1.18x7.08x0.79inch Package Includes: 1 Set Speaker Sponge Pad note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.