WishcottonWomen's Memory Foam Spa Thong Flip Flops Cozy Indoor Slippers, Ladies Summer Lightweight Open Toe House Sandals

Do they have arch support? I have planters Faciitis and need good support

If i i wear a 6 1/2. what. size should i get

how do i choose the size i need?

Wear an 8.5 was going to order the 9-10. But, someone said they did the same and wish they had gone smaller, others say they run small.