Overview The Women's Infinity Run 4 is Nike's rockered, wider-base neutral daily trainer. ReactX foam with a flared midsole, waffle outsole pattern, and a stretch Flyknit upper. Nike positions it as a high-mileage comfort trainer rather than a race or tempo shoe. Details Best for: Women's high-mileage daily training Marathon base blocks Runners who want wider-base neutral comfort Recovery miles Specs: Midsole: ReactX foam Stack: 39 mm heel / 30 mm forefoot (per Road Trail Run) Drop: 9 mm Weight: 9.4 oz / 266 g in women's US 8 (per Doctors of Running) Rockered, flared midsole with wider base Upper: Flyknit with stretch collar Colourway: Standard seasonal colourways Materials & Care Flyknit stretch upper, ReactX foam midsole, waffle-pattern rubber outsole. Nike recommends sizing up a half size. Remove the insoles and laces before cleaning; clean each separately. Wipe the upper with a soft damp cloth and a small amount of mild detergent; do not submerge the shoe in water and do not machine-wash. Heat and agitation damage engineered-mesh uppers and EVA / supercritical foams. Air dry at room temperature, away from direct heat or sunlight. Stuff with paper to hold shape while drying. Rotate between two pairs to extend midsole foam life. Bundle & Save Build a bundle and save up to 10% off. Shop Bundle Builder
