The term 'Reebok Alternative' can be summarized by three crossword solutions: Keds (4 letters), Avia (4 letters), and ADIDAS (6 letters). Keds is an American brand of canvas shoes that has been around since 1916. Avia is a footwear company that specializes in athletic shoes and was founded in 1979. ADIDAS is a German multinational corporation that designs and manufactures shoes, clothing, and accessories and has been in business since 1949. All three of these companies are popular alternatives to Reebok, which is an American-inspired global brand with a deep heritage in fitness, training, and running.