First produced in 1989, the Reebok ERS 2000 gets its name from then-new response technology engineered using a system of tubes. This edition revives the classic in blue neoprene with navy panels, bold TPU reinforcements and reflective piping around the heel. Contrasting Vector logos emblazon the sides. Its foundation consists of a two-tone midsole, springy heel insert and tricolor rubber outsole.