Review on Ultimate Performance: FADTOP Barefoot Quick Dry Water Sports Men's Shoes by Derek Evans

I ordered him an 11-11.5 and he usually wears a size 10.5.

Fits perfectly! I also ordered a size up (usually an 8.5 in a flat) and they fit pretty well, but there's definitely room for a bigger foot than mine. Worn 3 times, 2 times at the lake and once at the water park (so much more walking) and they have held up well! In fact better than expected (I lowered the bar A LOT).