Released in February 2019, the Nike Free RN 2018 GPX 'Atmosphere Grey' is an updated version of the lightweight Nike running shoe, featuring a military-inspired design in a camouflage colorway. The sneaker is specifically designed to provide runners with a natural sensation, combining a knit, stretch-mesh upper with a Dynamic Fit system for optimal support and anatomical comfort. Furthermore, the foam midsole offers a cushioned feel with a rounded heel that allows for smooth foot strikes, while deep flex grooves imitate the sensation of walking barefoot.