To push your workout to the limit, you need headphones that can keep up. Bose® SIE2 sport headphones deliver a combination of sweat- and weather-resistance, comfortably secure fit and Bose quality sound that conventional sports earbuds can’t match. The exclusive TriPort® acoustic headphone structure gives your music a full, rich sound you’d expect from much larger headphones. The proprietary StayHear® tips, available in three sizes, provide a comfortably secure in-ear fit, even during vigorous exercise. SIE2 sport headphones let you enjoy your music while allowing you to stay aware of your surroundings. The acoustic ports are positioned to resist sweat and weather, and covered with hydrophobic cloth that keeps moisture out but lets sound pass through. The exclusive Reebok® fitness armband holds your device securely and comfortably in place during exercise – plus stores your headphones when your workout’s over. The cables and connections are optimized for durability. Available in Green. You demand more from your workout. Shouldn’t you demand more from your headphones, too?