Since I discovered them I only buy this brand. Before Dunham, 10.5 EEEE matched other brands. I bought them for my soul mate. He has wide, high-arched feet, making it difficult to find non-slip shoes. He wears 11EEEE. He wore 2 pairs of the same model in a suede combination; It lasted a year, which is much longer than most shoes. He needs a knee replacement and with a stabilizer in the heels, high sides at the ankle and an upper that fits snugly at the ankle, these shoes offer excellent support and an overall quality construction inside and out. When I first wore all 3 pairs (on my feet all day) the shoes were comfortable. The only downside is the shoe's footprint on a large amount of garden waste that sticks to the ground. This is due to the large tread, which improves stability, so this is a minor complaint. By the way, I bought several pairs of dresses, Dunham shoes, and the size matched other Dunham shoes, and I felt comfortable from day one.