Released in March of 2017, this Ultra Boost 3.0 'Leather Cage' dropped in a two-pack with a grey ‘leather cage’ colorway. The design combines a premium leather cage with matte black wax laces and a black Primeknit upper. It also features a perforated matte black heel cup with debossed branding, a white Boost midsole, and a black Continental outsole.