The Nike Free Rn 2018 Black Anthracite was released in auxetic shapes to allow natural foot splaying while also providing balanced cushioning underfoot. The black/anthracite colorway is updated to deliver a more adaptive fit than before.The release features a circular-knit upper with spandex, a dynamic heel system, and a Tri-Star outsole pattern to give you a natural movement. The Nike Free Rn 2018 Black Anthracite achieves durability and comfort from its co-molded midsole with softer injected Phylon (IP), slightly firmer injected unit sole, and core foam direct underfoot that also delivers a smooth ride.The Nike Free Rn 2018 Black Anthracite was released at a retail price of $100 on February 16, 2018.