Auralex Acoustics HOVERMAT HoverMat Portable Acoustic Barrier Non-Slip Drum Mat, 48" x 72" Provide sonic isolation between your drums and whatever they're resting on. 23.75-Inch x 23.75-Inch x 1-Inch 6'Wx4'Dx.25" Thick adn Enhances sonic clarity of drums and percussion by eliminating sympathetic resonances within the rooms sub floor and superstructure Yields a tighter, more precise bass response while un-masking otherwise obscured higher frequencies Limits sound transmission from room to room by minimizing direct mechanical vibration between the sound source and the building as a whole.