If you’re wondering what are the best Nike running shoes for letting your feet expand and your toes flex, you’ve probably got your eye on the Nike Free line. If you’re intrigued by the light and flexible Nike Free Flyknit, but you’re wondering if a slightly different mesh upper is worth the extra price, you may want to note how many premium Nike models advertising luxurious comfort manage to do without Flyknit. The Nike Free RN 2018 may just have all the flexibility and natural ground feel you need for a more reasonable price.