I wore these on some
"I wore these on some bonefish/permit flats; alternation eel grass, coral and sand. They are lightweight and agile to walk in. They keep the sand out well. Zipper gets sticky from sand but probably unavoidable. My only hesitation is level of protection against an urchin spine, very sharp coral, etc--I didn't have a problem, but I have some Simms flats sneakers that have more protection that I prefer because of that, despite heavier weight. These are a good option if you want to go light, maybe ideal for a sandy flat."