These are a lightly worn pair of trainers / sneakers. Nike say:

"Kevin Durant's eighth signature sneaker, the Nike KD 8, features ultra lightweight construction and is packed with innovative features. They boast a single-layer Flyweave upper that's both flexible and strong, an articulated full-length Zoom Air unit redesigned for added flexibility and bounce, Flywire cables for lockdown support, foam heel counter that provides stability, and rubber outsole with multidirectional traction pattern."