I have carefully selected and changed the listing to "No noticeable scratches or stains, 12 pieces." These are easy-to-use, large-sized joint mats, with antibacterial and odor-resistant properties for peace of mind. - Size: Large 59cm - Material: PE resin - Antibacterial and Odor-resistant: Yes - ISO Standard: ISO 9001 - Edge pieces included Thank you for looking.