An evolution of the original Walkstar the Walkstar 3 features dynamic topstitching on a sporty streamlined leather upper a soft leather lining and a stitch and turned top line for maximum comfort across the instep. *NEW* - Microfibre lining and soft leather toe post for added comfort. Several leading studies have shown that wearing FitFlop actually extends the amount of time that your slow twitch muscles are engaged during each step by between 10-12%. So just by wearing them walking to work working around the house or shopping and you\'ll feel and see the benefits. FitFlop sandals have even been clinically proven to increase the amount of time that the glutes maximus muscle is activated during walking... meaning they work your bum muscles more. Cushioned Heel Area - absorbs 36% more shock than regular footwear. Micro-wobbleboard mid section slows eversion rate and requires up to 15% more energy to walk on. Firmer Toe Area - promotes faster toe push off to maintain speed of walking.