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