This is a ThinkGeek Planetary Glass Set. The set includes 10 pieces, featuring the eight planets, the Sun, and Pluto. The glasses have solid, heavy construction and are BPA-free. The Sun glass holds 16 ounces, the eight planet glasses hold 10 ounces each, and the Pluto glass holds 4 ounces. They feature high-temperature heat wrap designs of each celestial body. The manufacturer recommends hand-washing only for best care.