They can be personalized time and again using a ballpoint pen. Offered in a variety of colors, each pattern comes in a box of four. Best of all they are beautiful to the eye, pleasing to the touch and a great way to reveal your table's natural grain. The innovative shape is a square with two subtly rounded corners to give it a modern twist.Care: Keep away from sharp objects. Must wipe or rinse to prevent staining. Heat proof to 250C or 482F. Not a trivet.