I’ll probably throw them away and purchase sandals at local DSW so I can try on various to get the best fit. I came out with no blisters and total comfort throughout the day. 5 to 6, purchased the 5 (these are the narrow fit I found upon receipt) and after a day of wearing the fit perfectly with minimal break in and no blisters! And thats all I really care about. so cool to go inside of my ear and see all the gunk. Unfortunately the dust cover on mine came scratched which really takes away from the Beauty of this product. If these had lasted longer, I would have definitely bought another pair. I have back, knee and hip problems and I find they do much better if I have a good foundation, good arch support, restricted enclosure for my foot. They are SO warm and SO cozy! I generally walk along paths and maybe if I’d known how quick the sole would wear I’d have saved these for more grassy/ woodland walks.