The Nike Hyperdunk+ basketball shoe tracks every move of your game, and syncs directly to your phone, letting you know exactly how high, how quick and how hard you play. 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, strength and durability. 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. Basketball-specific Lunarlon midsole supplies a soft, yet responsive foundation. Improving upon past models, there is additional foam in key areas, enhancing lateral stability and durability. A 3-D shaped, glass-reinforced, composite midfoot shank offers torsional rigidity and responsiveness. The solid rubber provides durability and traction on a variety of surfaces while a modified traction pattern and forefoot pivot circle enhance multi-direction grip. Moreover, a high-wrapping lateral outrigger provides reinforcement for hard cuts, providing players with the support they need for high performance. Nike+ Basketball Sport Pack is included to provide everything you need to get going: The shoes are embedded with Nike+ Pressure Sensors, two Nike+ Sport Sensors, Nike+ Sport Charger and a Nike+ Sport Adapter. The Nike+ Pressure Sensors and the Nike+ Sport Sensors capture movement and performance information, which is then used to calculate your stats using Nike's proprietary algorithms. The information captured by your Nike+ basketball shoe is synced directly to the Nike+ app on your mobile device using Bluetooth version 4.0 (a.k.a. "smart," or low-energy technology). To get started, you will need to download the free mobile app to your compatible mobile device. Wt. 12.8 oz.