Gently used shoes that don’t need laces, buckles, snaps or straps! The KIZIK Vienna are casual women's nubuck hands free sneakers with elastic goring and breathable perforated upper. These Kizik Vienna Black Matte Nubuck Women's Shoes have the following features: Nubuck leather is durable and stain resistant for long lasting style F.A.S.T. Technology enables Hands-Free functionality Elastic goring Contoured Footbeds ensure all-day comfort AUTOMATIC FIT: When activated proprietary internal wing shape automatically opens to let your foot in, and closes to keep it in TONGUE REINFORCEMENT: Flexible structure provides rigidity for smooth hands-free functionality without sacrificing comfort INSTEP ADJUSTMENT: Customize your fit with the simple adjustment strips on both sides of the tongue RETRACTABLE HEEL: Heel material is built to repeatedly collapse and quickly regain its shape ARC DESIGN: Proprietary flex-rebound system combines responsive rebound with low profile flexibility TITANIUM SPRING WIRE: Aerospace grade titanium spring wire for exceptional rebound strength and flexibility Each shoe is made of the highest grade materials which ensures the great strength, durability, and looks even better over time