In the US, smarties are a tablet candy, that comes in wrapped clear packets (in Canada, the same candy is marketed under the name Rockets.)

In the UK and Canada, smarties are entirely different. They are similar to M&Ms , with a sugary crisp shell and a chocolate middle. They are slightly larger than M&Ms, however, and usually come in different colours, the most common variety including pink, red, orange, yellow, green, blue, purple and brown.