This is a used Yamaha gray drum mat, used by my son for about a year in an apartment for practicing electronic drums about 9 years ago. It's soundproofed and has a non-slip backing. It's approximately 130cm x 130cm and has the Yamaha logo. It appears to have little damage or dirt. It's a reused item, and I think it can be used normally. I'm listing it in case anyone is interested. 160cm when packed.