BUBOS 12 Pack Hexagon Acoustic Panels Sound Dampening Panels, 14 X 13 X 0.4 Inches Sound Proof Padding Beveled Edge Wall Tiles Used in Acoustic Treatment,Home & Offices Dark Brown

I used these for the outside of the massage room for extra noise cancellation. Works well and also a great decor for any room. The room is well insulated so I didn’t need it that much but it does help. Maybe if I add more to the wall it would work even better. Love these!