Summer shoes for hypermobile 3.5 year old

[Gicoh]

I'm looking for recommendations for summer sandals for a hypermobile child. My 3.5 year old is flexible on her ankles and her feet roll in. She wears orthotics.
I can't seem to find anything and have no idea where to look. Any ideas?

There are a few places that sell specialised sandals. But personally I don't let my daughter wear sandals. Her hypermobility isn't severe enough to need orthotics but if she wears sandals of any type they seem to give her leg pain by evening.