Nixon Heat Black Aqua Positive Watch A slim superstar with a singular goal: make a low-profile watch for timed sports that can stand up to the most punishing conditions. This favorite training tool of two-time world champion surfer John John Florence features multiple timer options, a rugged but thin 8mm case design, and a sporty, breathable strap. From sets in the gym or the water, laps in the pool or the track, the Heat is on. Item cannot be shipped to P.O. Boxes