Design: Full UA IntelliKnit upper is breathable, light and comfortable with stretch and support where you need it Ultra-thin TPU skin for lightweight protection and durability Knit collar for a sock-like fit and added comfort More secure heel pocket for added comfort and lockdown In-Shoe Comfort: Responsive UA HOVR(TM) cushioning reduces impact, returns energy and helps propel you forward Durability & Traction: Track spike-inspired plate with propulsion spine and aggressive perimeter traction for ultimate speed