The Adidas Yeezy 450 features some of the newest and most fascinating sneaker technology ever seen on any shoe. The knit upper is secured with an integrated lacing system and topped with an elastic, sock-like cuff. The sole unit constructed out of EVA foam moves up your foot to also become a mid-foot cage. The shoe model due to the stretchy but tight fabric has a pretty slim fit and due to the structure of the model you should definitely go at least one half size up from your true size. The fit will adapt to your feet and specific needs over some wear which makes the shoe have that perfect fit.