Reebok International Limited is a British producer of athletic footwear, apparel, and accessories and is currently a subsidiary of Adidas!. The name comes from Afrikaans/Dutch spelling of rhebok, a type of African antelope or gazelle. The company, founded in 1895, was originally called Mercury Sports but was renamed Reebok in 1960. The company's founders, Joe and Jeff Foster, found the name in a dictionary won in a race by Joe Foster as a boy; the dictionary was a South African edition, hence the spelling. In the late-1980s, the company introduced the Reebok Pump line, which used an air bladder, inflated by means of a small pump integrated into the tongue of the shoe, to hold tightly to the wearer's ankle. This allowed for more aggressive maneuvering without injury, but also became a popular fashion element. Around 1993, they introduced an air transfer system which was incorporated into the sole of the trainer. It is now included in several hockey skates, such as the RBK 9k and the RBK 5k.