I know that others have said that shoes appear to be made for people with high arches and are no go good for flat feet. But, I have a very high arch and I have major problems getting shoes. It's physically impossible for me to get my feet into many styles of shoe or boot. I have little feet, so shoe size is not the issue. And I can't wear ballet pumps (basically anything that isn't secured onto my foot), otherwise I just walk right out of them. I have one pair of shoes that I find comfortable (Skechers walking shoe). Instead of the usual high heels for going out/ wearing with a dress/skirt, I have a pair of Victorian style lace-up ankle boots, with a 2 inch heel. They have a zip on the inside, so I can get my foot in with ease. I have 2 pairs of flat Mary Janes with straps, for the summer, which allow for my arch. I definitely cannot wear 'normal' high heels, not even a small heel. Apart from the structure of my feet, the other issue I have is sensory, so sandals, with their many irritating parts, are counted out right away. My daughter is exactly the same (on both accounts). She has 2 pairs of trainers, school shoes, wellies and a pair of dressy shoes. Shoe shopping is a nightmare for both of us.
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"We act as though comfort and luxury were the chief requirements of life, when all we need to make us really happy is something to be enthusiatic about." Charles Kingsley