When it comes to the ideal timepiece for summertime, a rubber strap watch has to be at the top of the list. They're ready for any adventure you could imagine. The flexible band is less precious than your standard leather, won't scratch like a metal bracelet and is tougher than a thin nylon strap. Which is why so many of the best watchmakers now make models outfitted with bands made from rubber—in all its various natural and synthetic forms. They're ruggedly handsome, for sure, but they also come with serious functionality. Of course, they're ready to dive into the ocean but also come in handy if you find yourself sweating through any activity this summer, from long-distance biking to a pick-up game of basketball. What's more, they look damn good too—the thoughtful combination of utilitarian materials and functional design isn't unlike the best sneakers of the moment. Herewith, some of the best watches to strap on this summer, in a range of prices.