The Oh!Zone was one of Hummingbird's most successful mass market item. Painted in bright neon colors and splash painted. The neon colors made them attention getters on the store racks. The Oh!Zone line was shown in the first "Ninja Turtle" movie, which gave Hummingbird some momentum.
Pictured here is one of the rarer Oh!Zones. Usually, the logo appeared on the rim. A few were made with a circular logo at center, as pictured. This was also the logo used for the Oh!Zone Spin Tops.