The Nike Lunar Hyper Workout XT+ training shoe features a neoprene-inspired innersleeve that conforms around the foot to provide lightweight comfort and support. Lightweight mesh outer layer adds ventilation. Flywire technology beneath the mesh outerlayer wraps up from underneath the foot and integrates with the laces to offer a dynamic, supportive fit. Cushioned heel pod delivers a comfortable fit. Lunarlon cushioning system features a soft yet resilient Cushlon core encased within a low-profile and durable Phylon™ carrier that is tuned specifically to the demands of training, making this platform responsive and lightweight, yet stable enough for training activities. Low-profile midsole provides a more stable ride from heel to toe. Molded EVA sockliner adds comfort directly underfoot. Nike+ enabled for an enhanced training experience. Midsole is contoured around the arch for a sleek look and to help reduce the overall weight of the shoe. Flex grooves allow for natural motion when training. All over traction pattern allows for multidirectional movement. Solid rubber placed only on the heel and forefoot gives durability only where you need it most to help keep the shoe lightweight. Wt. 6.2 oz.