AfterShokz | Xtrainerz Zip Relieves swelling through decompression which

Relieves swelling through decompression which speeds recovery

Vibrating foam roller with opposing ridge curves

The full-length plate is perfect for races ranging from 800m to 3k

designed to relieve discomfort caused by Runner’s Knee

- Rear center zip pocket that's large enough to hold most phones

AfterShokz | Xtrainerz Zip Relieves swelling through decompression whichTake 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).