Engineered to be the most breathable Nano yet The Nano X4 redefines training footwear with a radical refresh. Experience the featherweight freedom of an all-new Flexweave upper, engineered with breathability and durability in mind.  Nano X4 isn't just about stripping away weight; it's about stripping away distractions. This streamlined silhouette liberates your movement, letting you break free from anything that holds you back. Premium support meets a breathable, lightweight design, empowering you to conquer every workout with confidence. Features: Lightweight: All-new Flexweave upper delivers a soft, lightweight feel without sacrificing durability. Breathable: Midfoot ventilation panel keeps your feet cool and comfortable, even during intense workouts. Lift and Run (L.A.R) Chassis System: L.A.R. Chassis System provides stability for lifting and responsive cushioning for running and jumping. Stable: Redesigned TPU heel clip locks in your foot for maximum stability and comfort. Sleek & Streamlined: 7mm drop and 12.10oz weight create a sleek silhouette for optimal performance. Size Guide: