The memory foam is really nice for feet but you should only purchase these if you enjoy smelling like bad foot odor. As your feet sweat, the memory foam absorbs the sweat and becomes a sopping wet and slippery mess. I tried washing them but the odor remained. I do not consider myself to be an excessive foot sweater but you would never know it with these sandals. The memory foam also become dis colored and stained the more I wore them and the more my feet sweated. I gave up on these after a month and threw them in the trash. I purchased two other pairs (Nike and Adidas) without the memory foam and have had no issue.