Men's sneaker with Breathable mesh upper,Vionic's Vio-Flex footbed is a flexible, lightweight compound offering optimal moisture control including a perforated heel for added breathability Durable rubber outsole for traction,1.8" heel height Tested by Heeluxe: The footwear industry gold standard, Heeluxe uses patented technology to analyze comfort and performance against competitive styles, in conditions that duplicate real-world wear Vionic's lightest midsole yet, this nitrogen infused midsole offers the highest rebound to enhance your walking motion,For optimal comfort, wear your new Vionic shoes for a few hours to let your feet adapt. Within 1-2 weeks, you should experience full orthotic comfort and support Water Repellent: Treated with a water repellent coating to repel water on contact,Built-in VIO MOTION Technology footbed featuring contoured arch support and forefoot flexibility,Helps correct pronation and promotes full-body alignment and many different types of foot ailments