Lately I see this as a trend in sneakers. I think it's just cheaper to make shoes with no stiffness or support. if you want a shoe that you can only wear around the house, this is for you. but if you want to take shoes for a walk, I don't recommend them. I find shoes that have no support where your foot just floats which actually causes my feet to tire prematurely. Would definitely not recommend as running shoes; likely to cause injury.