zippered pocket fits most smartphones

Each capsule contains: 215 mg sodium

Easy and comfortable—simply slip on and off

Wear them wherever you go or wherever you train

100% NON-TOXIC

AfterShokz | Xtrainerz sale tights zippered pocket fits most smartphonesTake open ear listening to new depths with Xtrainerz wireless MP3 headphones. Xtrainerz are an innovative solution for consuming audio in and out of the water while youre cross training toward your new PR. The open ear design removes the limitations of traditional swimming headphones, and the 4GB memory stores up to 1,200 songs, allowing you to take Xtrainerz on any adventure; no wires, no devices, no limits. (Not Bluetooth compatible).