GUC - KIZIK Cairo Hands-Free Sneaker Shoe Colorway: Sunset ( Blue/Gold) Unisex: Men's Size 9.5 or Women's Size 11 Description: These shoes use proprietary technology that includes a titanium arc in the back of the shoe. Embedded securely in the footbed, that titanium arc collapses when you push your foot forward, so your foot slides right into the shoe like a pair of slippers. It’s completely effortless. And once your foot is in place, the titanium arc pops back up. Your foot is completely secure in the shoe, but KIZIKs are fully hands-free. And the company does it in a way that gives no visual clue that they are any different from everyday shoes. The Cairo are modern-looking sneakers with four-way stretch air mesh uppers—the fabric is made from 100% recycled plastic bottles. The outsole is a blend of foam and rubber. Insoles are high-density foam for comfort. There are even laces. However the laces are a one-time-only thing—the first time you put the Cairos on, you tie the laces so the shoes are just snug. From then on, you can forget about them (unless they come untied over time).