While this sandal is adorable and has a comfy insole, the material, hardware and way that it is contructed created so much friction, after only one wear my daughter was left with the worst blisters I have ever seen. They were not small when we tried them (this is still her size in all other footwear), but the material and harsh hardware placement was the issue. Two weeks later, her blisters have still not healed as of course it's tough to keep bandaids on a toddler. I also felt I needed to leave a review as after reaching out to customer service to see if it would be possible to return despite being past the window (I had purchased before weather was really suitable for sandals), I got no response. Perhaps the shoe works for babies or those not yet active, but do not reccomend purchasing this for a toddler running around this summer, certainly if these got wet I'd be concerned about further friction caused.