Vivay Kids Water Shoes Girls Boys Toddler Quick Dry Anti Slip Aqua Socks for Beach Outdoor Sports Pink Star 5-6 M US Toddler

I understand everyone's foot is different, but it would help to have a sizing guide for these shoes.I bought a 6-7 for my daughter who is 2 next week. I have other sz 7 shoes that are big for her, so I figured I would go on the safe side. These are too small. I see that on the shoe it shows 22/23. I wish that this was written somewhere - these are small sizes.