Eliminate Vibrations/Resonance. Non-Slip Surface Ensures the Speaker Stays in Place. High Density Foam. Available in 3 Different SizesDimensions & Weight: Small: 60 x 240 x 190mm- 1.2kg Medium: 70 x 260 x 330mm- 2.27kg Large: 60 x 280 x 330mm- 2.39kg. Acoustic isolation pads decouple monitor speakers and eliminate vibrations/resonance- and in some instances eliminates resonant coupling from the surface to which the speakers are situated. Using the angled isolation pads gives greater detail and depth across the frequency spectrum- allowing for easier and cleaner mixing. The high density foam allows the speaker to be separated from the surface while the non-slip surface ensures the speaker stays in place.. speaker pads-studio monitor pads