Stylish, clued-up men are looking beyond Patagonia and going gaga for a new wave of hiking-style clothes. They’re good-looking—and, often, pricey. Call it Gorpcore 2.0.

Do we really need much more of an excuse than that to round up some of the best men's beach outfits of all time and dole out a few helpful style tips to get you looking your absolute best sur la plage ...