Running shoes Nike InfinityRN 4 GORE-TEX - Top4Running.com。{Nike} InfinityRN ReactX 4 Running Shoes - Mens 9 Size: Mens 9 Colors: Vast Grey / Bright Crimson / Hyper Violet New without original box. Lightweight and stretchy upper Flyknit mesh that wraps the foot like a sock for snug fit. Water-repellent toe lining. Midsole in Nike ReactX with rocker design. Sole with waffle tread in thicker anti-abrasion rubber. Lightly padded collar for a softer feel at the ankle. Flat laces integrated into the upper Flywire system. Thin tongue. Reflective details.