Bose Sei2 Best Buy (2024)

They use proprietary StayHear tips with a "wing" design that locks into the ear's ridge without being jammed deep into the canal.

Hydrophobic cloth covers the acoustic ports to keep moisture out while letting sound pass through. bose sei2 best buy

They famously came with a custom Reebok fitness armband to hold an MP3 player or phone during workouts. They use proprietary StayHear tips with a "wing"