Ruby-throated Humming Bird Flowers Vintage Audubon Hummingbird Art Coaster is a great complement to any home décor. Soft coasters are 3.5" x 3.5", are absorbent, and can be washed. Ceramic coasters are 4.25" x 4.25", non absorbent and come with felt corner pads. Available in sets of 4 and 8.