Nike brings back a classic runner shoe that originally debuted in 1986 as a marathon go to. The Nike Air Sock Racer released over 30 years ago and it’s back featuring a full on flyknit build for 2017.

Today’s Nike Air Sock Racer Ultra Flyknit brings the innovations of the original shoe into the present. The upper uses Nike Flyknit for the first time, offering increased breathability, improved fit and an uncanny capacity to take different coloring. The shoe maintains the original buckle closures with slightly thicker straps — one that keeps the wearer from shifting too far forward, and the other for medial and lateral support — and the collar’s lined pattern draws from the Nike Air Sock Racer Ultra Flyknit. The lighter Nike Ultra outsole includes dual-density foam tooling, a sipe pattern referencing the construction of Nike Free and encapsulated, top-loaded air in the heel.

The Nike Air Sock Racer Ultra Flyknit is available April 27 on Nike+ SNKRS, nike.com and at select retailers.