I purchased a 1/2 size too big which I discovered after I wore these one time. They have great arch support and are very comfortable. According to Taos website, "This canvas sneaker has Curves & Pods® premium removable footbed featuring arch and metatarsal support, while also having a thicker and higher platform. Silvadur treatment is used for lasting protection against odor, staining, and deterioration. Plim Soul laces offer adjustability in achieving the right fit."