Acoustic Panel for Sound Absorption | customizable sizes from 12"x12" to 96"x48" and over 40 fabric colors.
JAMELO 12pcs Square Acoustic Absorption Panels Set, 30x30x1cm Self-adhesive Studio Soundproofing Panel, High Density Acoustic Insulation Panels for Recording Studio & Home & Offices (Grey) : Amazon.co.uk: Musical Instruments & DJ