These colorful hexagonal wall tiles are made from sound-absorbing "wood wool"
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Drydiet 18 Pieces Hexagon Acoustic Panels Felt Sound Proofing Padding Beveled Edge Flame Retardant, 14 x 12 x 0.4 Inch High Density Dampening Panel ...
JAMELO 12 Pcs Self-Adhesive Acoustic Absorption Panels, High Density 12" X 10" X 0.4" Soundproof Acoustic Panel, Hexagon Sound Absorbing Panels for ...