An icon comes to life. In a homage to designer Steven Smith, the Instapump Fury Boost Prototype sports the original colorway of his 'pullover' Legendary running-inspired style. Iconic looks and revolutionary cushioning come together in these InstaPump Fury Boost shoes. A layered, cut-out design give these kicks a fresh look. They pump up with air for an old-school vibe and a personalised fit. Boost cushioning makes them extra comfortable.