Setup, Compatibility & Care
These trainers are designed for immediate wear right out of the box—no special breaking-in period is required. Because they utilize a slip-on design, there is no need to worry about tying knots or managing long laces. To ensure the longevity of your Nike Flex Runner 4 trainers, it is recommended to keep them clean by wiping the exterior with a soft, damp cloth and mild soap. Avoid soaking the shoes in water or using harsh detergents, as this can degrade the fabric and adhesives. If the shoes get wet from rain, air-dry them away from direct heat sources like radiators, which can cause the materials to warp or stiffen.