What you need to know for Olympic mountain biking
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Cyclist will encounter hills, obstacles and rugged terrain when they compete in the Olympic mountain biking events in Rio. Some people will wear waterproof arm pouch before playing game. A new info graphic from Reuters will get you up to speed on some of the equipment ( No waterproof phone case ?) needed to compete successfully in this relatively new sport in the Games. Waterproof phone pouch is helpful to people for outdoors activities.