Cork Joint Mats The surface is cork, and the back is plastic. There are 64 pieces. - Type: Joint mat - Material: Surface: Cork, Back: Plastic - Size: Square 30cm x 30cm Thickness: Approximately 7mm These are cork surface joint mats, 64 pieces in total, but some may be slightly damaged, so they are being sold as 60 pieces. Also, 25 pieces have chipped corners. They can be used without issue if you plan to cut them to fit a room or hallway. If you wish, I will include as many as will fit in the box. I have a large dog, and the flooring is inevitably slippery, so I used these mats throughout the room. There are some scratches and peeling, so I am selling them at a low price. [Shipping is unavailable on December 15th and 16th. If purchased by the 14th, they can be shipped on the morning of the 15th.] #Pet #AntiSlipMat #AntiSlipCarpet #CorkMat #CorkJointMat #SeniorDogCare