Review on Girls Swimming Barefoot Purple Toddler Boys' Shoes : Outdoor by Justin Metz

I ordered shoes for toddlers 6.5-7. My son is now a size 5.5 so I went up a size and they were still snug, pinching his toes and allowing them to curl up. The shoes themselves are very cute and the material is nice and light. We have not tested them in the water or on the beach as they have to be returned due to sizing issues. If we didn't have time I would trade them in for 2 sizes up from his usual size for the perfect fit. I think 22/23 on this brand = size 4.5?