They use proprietary StayHear tips with a "wing" design that locks into the ear's ridge without being jammed deep into the canal.
The Bose SIE2 series is in new condition at Best Buy . If you are looking for current alternatives with a similar sports-focused design, consider these newer wireless models: Bose® - SIE2i Sport Earbud Headphones - Purple - Best Buy bose sei2 best buy
Hydrophobic cloth covers the acoustic ports to keep moisture out while letting sound pass through. They use proprietary StayHear tips with a "wing"
The "open" design doesn't seal the ear canal completely, allowing you to hear ambient traffic or surroundings while running. The "open" design doesn't seal the ear canal
The (often misidentified as " ") and its counterpart with an inline mic, the
Known for clear mids and highs with "plump" but not overwhelming bass. Availability at Best Buy
These headphones were specifically engineered for high-intensity movement and outdoor safety.