The Puma RS-0 Tracks 'Glacier Grey' sneaker was released in March 2019 as part of the brand's reprisal of its 1980s Running System series. This model features a mesh inner sleeve with textile and leather overlays for lightweight support. TPU reinforcements help stabilize the shoe, while RS technology and IMEVA foam cushioning team up below. Icy-colored rubber on the sidewall and outsole finishes the design.