Nike Flex RN 2021 men's running shoes in black with red accents. These lightweight training sneakers feature a breathable knit upper and a flexible sole designed for comfort and performance. The "RUN MORE USE LESS" slogan is subtly incorporated on the heel counter. Perfect for your daily runs, gym workouts, or casual athleisure wear. Department: Unisex Adults Style: Sneaker Shoe Width: Standard Shoe Shaft Style: Low Top Upper Material: Knit Type: Athletic Performance/Activity: Gym & Training, Cross Training, Racing Features: Cushioned, Lightweight, Performance, Comfort Insole Material: Foam Pattern: Flecked Lining Material: Fabric Keywords: Nike Flex, running shoes, men's sneakers, athletic footwear, training shoes, lightweight, breathable, flexible sole, athleisure, gym shoes, performance, knit upper