F.A.S.T. Technology uses brilliant design and ingenuity to provide a rebounding heel that encloses the foot after entry, allowing you to put your shoes on in a split-second. Please click for a video about KIZIKs adjustment features. The KIZIK Atlanta is the perfect athleisure sneaker with a hands-free experience, ideal for those always on the go! Full-grain leather or suede upper with perforated detail to ensure breathable comfort. Features F.A.S.T. Technology enabling a hands free, POP ON experience. F.A.S.T. creates a smooth rebounding heel using an aerospace-grade titanium wire. Custom instep adjustment allows you to tighten or loosen the fit using strips alongside the tongue. Tongue stabilizer eliminates foot movement and improves stability. Generously cushioned, contoured leather footbed. Rebounding rubber heel and outsole. Imported. Measurements: Weight: 10 oz Product measurements were taken using size 8.5, width M. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.