I need some help! DS has super fat feet. He's 17 months old and wears a size 5 right now. I bought him shoes (Striderite, 6.5W) that had a velcro closure, but they don't fit once I get socks on him. The velcro strap is too short. I found a cute pair of size 6 converse at the local consignment shop, but they were hightops and didn't fit his ankles.

His feet are more fat than wide, but I'm having a lot of trouble finding shoes to fit. If I go up a size, he can't walk well because they are too long.

Any suggestions?