The Nike Free OG 14 BR Engraved Shoes Dark green Shoes are designed to let your feet move more freely and naturally, which means your muscles will be doing a bit more work than demanded of them. More effective and more enjoyable experience in Nike Free 2014 because they blend the strengthening and injury-prevention benefits of barefoot running with the comfort and protection of a shoe. The Nike Free Cheap Run provides outstanding flexibility, durability and breathability.