Thank you for viewing this product from among many others. What I am listing this time is: Cork Joint Mat Beige Square 45x45 16 pieces. Thank you in advance. Cork material joint mat, beige square design. I had stored these used mats for soundproofing, sound absorption, and insulation for audio purposes. These are joint mats with cork attached. I purchased these because they seemed to have a better soundproofing effect than regular joint mats. I don't know if they were effective, but I felt a sense of security from having cork on the floor and walls. I had stored them intending to use them under carpets and curtains, so I think there may be some damage to the cork and joint mats. Please consider them as junk. I am also decluttering, so if they don't sell in about a week, I will dispose of them, so thank you for your understanding. - Material: Cork - Shape: Joint type - Color: Beige - Size: Square 45x45 The surface is cork material, and the back is beige.