Last summer he had a pair of Clarks leather Sandals with a foamy spongy insole like this and they reeked after a few days wear (I bath him every night, he must just have very sweaty feet!)
This year I wonder if there's anything that will be less malodorous?
I've seen doodles sandals with a plastic base like this and you can wash them can't you?
Otherwise I was thinking of some cotton doodles skater type shoes as it's a natural fibre? like this They may be a bit too hot though?