Video answer: How to know your shoe size
Top best answers to the question «Should you buy walking shoes a size bigger»
Size Up for Walking Shoes
If your shoes aren't big enough, you can end up with black toenails, blisters, and foot pain from swelling. Your walking shoes should be larger than your regular shoes because your feet may swell up to a full shoe size when you walk for over half an hour.
Video answer: How to buy shoes that fit properly | foot care