The green Bose SIE2 Sport Headphones are designed to keep you motivated during indoor and outdoor workouts. The headphones feature a sweat-resistant and weather-resistant hydrophobic acoustic cloth, as well as StayHear ear tips that remain in place even during strenuous workouts. Plus, the Bose TriPort technology delivers deep, natural lows and crystal clear highs. As an added bonus, the headphones come with an exclusive Reebok fitness armband that holds your device while you workout. It's made from a stretchy, breathable material that adjusts to fit most smartphones and MP3 players including the iPhone 5, and it has a touch-sensitive window for ease of operation. There's also a pocket for your keys and a slot for your headphones when you're not using them.