From the Reef website: From daily commutes to distant excursions, travel in superior style with the SWELLsole Navigator. This lightweight shoe features our super soft memory foam insole and a cush EVA outsole, tailored for all-day support and premium comfort. We’ve designed these with a unique ripstop panel for enhanced airflow and added quick-dry ability. This style fastens with a traditional lace closure. Features: Upper | Crushback heel making it easy to put on and take off your shoes at any point. With a Breathable​ rip stop upper, providing better airflow keeping your feel cool even on the hottest of days Footbed | Memory foam sockliner for amazing step in cushioning and comfort Outsole | Soft and Lightweight EVA outsole and midsole providing a lightweight cushioning and great packability These shoes have been worn once but are in great condition!