Casual meets comfort in the KIZIK Vienna sneaker. Crafted from a leather upper with perforation detail for maximum breathability. Easy on and off with POP ON and the patented F.A.S.T. design. F.A.S.T. creates a smooth rebounding heel using an aerospace-grade titanium wire. Please click for a video about KIZIKs adjustment features. Featuring a soft leather lining that feels great against the foot, generously cushioned contoured leather footbed for superior comfort. Rebounding rubber heel and outsole. Imported. Measurements: Weight: 11.71 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.