The Nike Hyperdunk combines Flywire technology and a basketball-specific Lunarlon cushioning system which results in a more supportive, durable and breathable shoe. The upper features the most advanced version of Flywire, which uses high-strength cables for support and stability. These responsive cables are loose when at rest and dynamic in motion, tensing to help stabilize the foot. A synthetic heel clip enhances lockdown, as the engineered foam and mesh of the upper reduces weight while further increasing breathability. Simultaneously, the collar of the shoe wraps lower in the back and higher over the front, increasing flexibility and lateral stability in the heel and ankle. The open mesh tongue and full inner sleeve provide lightweight ventilation and a more secure, comfortable fit. A 3D-shaped, glass-reinforced, composite mid-foot shank offers torsional rigidity and responsiveness. Moving to the outsole, solid rubber provides durability and traction on a variety of surfaces while a modified traction pattern and forefoot pivot circle enhance multi-direction grip.