Love but don't last long

I love these, but I also don't like them. They broke after maybe 5 times, which, for the price it would be ok for me maybe after 20, but I can't see them living for one day in shoes, only worn by themselves or in socks. I only wore mine to bed to keep body butter on my badly cracked heels. They work wonderfully for this purpose but like I said they split after only a few times. Maybe they should offer different shoe sizes (a range) and those with bigger ankle/heel/foot areas they have to open these up for they will fit better and not wear out so quickly?

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