Maltesers are a confectionery product manufactured by Mars, Incorporated.

Maltesers consist of a roughly spherical malt honeycomb centre, surrounded by milk chocolate. They are most popular in Denmark, the UK, Australia, Switzerland, Spain, Ireland, Canada, Poland, France, Hong Kong, and Portugal.  Maltesers are sold in a variety of packaging, including plastic bags (ranging in size from small ‘fun-size’ upwards), larger cardboard boxes and tubes, and plastic buckets (ranging in size from medium to very large). They also have medium sized “teasers” in celebrations boxes. Maltesers are also one of the types of sweet included in Mars’s Revels assortment.

In February 2013, Maltesers will be sold in Italy, Malta, Norway, Sweden, Finland, Germany, Macau, Bosnia and Herzegovina, Croatia, Macedonia, Montenegro,Serbia and Slovenia.

The current name is a portmanteau of the words “malt” (one of the main ingredients) and “teasers”.

Info gleaned from Wikipedia