Quiksilver put a full-length air bag in the Men's Surge Sandal for super comfort. Plus, these flip-flops have leather or synthetic leather uppers that feel good against your skin and a quick-drying footbed liner so you don't have to walk around in soggy shoes all afternoon after a stroll on the beach. The anatomically correct footbed, along with the air bag, give you max support when you wear the Quiksilver Surges all day.