NIKE Metcon 3, size 27cm. Recommended for those who do weight training and are looking to take the next step after gaining some experience. The size feels just right for those who wear a 27cm in Nike Air Force 1. Please purchase if you understand that this is a used item. The box is not included. For the more particular, the Flyknit fabric makes it lightweight, making it ideal as a CrossFit shoe. Athletes who fit the size should definitely give it a try.