Pacers is a discontinued brand of popular mint

Mint (candy)

A mint is a candy characterized by the presence of mint flavoring or real mint oil, whether it be peppermint oil, spearmint oil, or another natural or artificial source...

 flavoured confection

Confectionery

Confectionery is the set of food items that are rich in sugar, any one or type of which is called a confection. Modern usage may include substances rich in artificial sweeteners as well...

.

Opal Mints were plain white coloured chewy spearmint

Spearmint

Mentha spicata syn. M. cordifolia is a species of mint native to much of Europe and southwest Asia, though its exact natural range is uncertain due to extensive early cultivation. It grows in wet soils...

 flavoured sweets

SweetS

was a Japanese idol group. Put together through auditions, the group debuted in 2003 on the avex trax label. Although the group met minor success, they disbanded after three years with the release of a final single in June 2006....

, launched as a sister product to Opal Fruits (now known as Starburst

Starburst (confectionery)

Starburst is the brand name of a cuboid-shaped, fruit-flavoured soft taffy candy manufactured by The Wrigley Company, a subsidiary of Mars, Incorporated...

). The product was then relaunched as Pacers. Later, three green stripes were added to the sweet. The brand was discontinued in the 1980s. At one point the Glasgow Celtic football team were nicknamed "The Pacers" because of the similarity of their kit to the sweets.