In a fluid design that speaks the language of fast, these sneakers have less bulk and more sculpted profile than previous versions. These sneakers have 2 Zoom Air units for targeted responsiveness in the forefoot and heel and engineered mesh that optimizes breathability.Synthetic upperSynthetic trimRound toePartial bootie wraps the foot for a secure, snug fitHeel foam sweeps away from the Achilles tendonModified waffle tread on the medial sideRubber crash rail on the lateral outsoleCrashpad enhances durability in the high-wear zoneLace-up vampSynthetic liningPadded insoleLightweight cushion midsoleRubber soleImported