The brand recommends wearing your new Vionic footwear for just a few hours for the first few days to allow your feet to adjust to the new level of orthotic comfort and support. Get your heart beat racing in the built for action Emerald Lace Up. Mesh and man-made uppers with a four-way stretch entry. Features Advanced Motion System (AMS) technology that provides a flexible, cushioned outsole and a lightweight, breathable upper. Lace-up closure. Breathable fabric lining keep your feet cool and dry. Features 1st Ray technology that features a forefoot that aids in energy return when you push off to a great stride. Removable, mocrofiber-covered EVA supports the feet. Durable rubber outsole with added traction. Imported. Measurements: Weight: 10 oz Product measurements were taken using size 9, width M. Please note that measurements may vary by size.