This is a set of 5 vintage mugs and they are 4" tall and 3 1/4" across the top. They are stamped "Corelle Stoneware Made in Thailand" on the bottom. They can match Blue Hearts, Country Hearts, Sponge Lace, Cornsilk, and other Corelle patterns with medium blue. They are in like new condition with no wear signs, utensil marks, chips, cracks, or flakes.