This is a mug shaped like a bell buoy. It was originally issued in 8 different color choices (Red, Blue, Purple, Turquoise, Blue, Green, Yellow and Orange). Each buoy mug has a ceramic bell strung to its underside. Each buoy's numbering corresponds to its actual number. For example #1, 11, 21, 31... have a 1 on them. #2, 12, 22... have a 2 on them. There is also a Super Limited Edition in Brown or Green glaze with a tapa-patterned base. This is the Black Friday edition and was released in black for the Black Friday 2016 event. Most of these Black Friday mugs were limited to ten pieces only.