I have these earphones...and I absolutely love them for working out. This is an awful priced deal, though. Especially being refurbished. I've bought many of Tanga's deals so far, but you can easily find these elsewhere, new, for cheaper.

When doing an hour on a treadmill I usually only have to adjust these two times. If I did not wear glasses I might not have to adjust them at all. Decent sound, cancels out background noise better then my old earbuds, love them for working out.