Each coaster is unique in shape.

They are roughly 4 x 4 inches each.

Make have some flaking, and rough edges

The Happy Birthday Slate Coasters Set of 4 is a unique and stylish addition to any home, featuring laser engraved images that add a personal touch. Each square coaster is made from lightweight slate material and showcases a pop art design with a happy character, perfect for all occasions. Handmade in the United States, these black coasters have a width of 4 inches and are sure to add a touch of charm to any table setting or bar area. Celebrate birthdays in style with this set of decorative and practical coasters.