Our fun and functional Sunflower Coasters are made from Maple, a very nice hard wood that will hold up well. They are sanded smooth and sealed for protection. They measure 4" x 4" and are 1/4" thick. They can handle anything from a hot coffee cup to a large water bottle with ease. You get 4 coasters with your order so quantity should only be 1, which equals 4 coasters.