KnitPosite is a combination of Flyknit construction and pre-twisted, heat-molded yarns that form swirled patterns. The result is light, durable and supportive, with each shoe having a look that's subtly one-of-a-kind. Designed specifically for Lebron, Nike Basketball's largest heel Max Air unit to date absorbs more force than previous designs. Visible, maximum-volume Zoom Air units under the ball of the foot provide quick, continuous responsiveness to generate fast-paced action. Wide collar with traditional tongue makes putting on and taking off easy while providing a comfortable, locked-in feel. Soft foam pod directly under the Max Air unit adds cushioning in the heel. Stabilizing plastic clip wraps around heel to lock you in. Resilient foam midsole Durable rubber outsole | The LeBron 17 harnesses LeBron's strength and speed with containment and support for all-court domination. It features a lightweight mix of knit and heat-molded yarns that give each one a durable look and feel. Combined cushioning provides LeBron with the impact support and responsive energy return he needs to power through the long season.