Soft resin green joint mats. The tile surface is 30cm square, excluding the connecting parts, and about 8mm thick. I bought them and tried to lay them down, but the size didn't fit the bathroom, so they've been stored almost unused. Perfect for bathrooms and wet areas. I'm also selling white ones at the same time. If you want to change 12 pieces to white, please consult before purchasing. Thank you for looking.