Finally, a pair of headphones / earbuds that stay in! I've tried several different pair of headphones and they all had the same problem: They refuse to stay in while I'm running.
Part of the problem is I sweat like a fish so naturally earbuds slip out. I had been using a pair of Sony clip-ons for nearly a decade and they had served me well, up until recently. The cord became faulty which resulted in static and the headphones not playing consistently. While ear phones would stay in place while running, they would slip off while sprinting.
My beautiful wife bought me a pair of Sennheiser Adidas ear buds and while they sounded amazing, they too refused to stay in my ears
while running. I tried each cushion size that came with the ear pieces but they refused to stay in.
A few days later I was at my local Best Buy and picked up a cheap pair of head phones to get me by until I could find a good pair that would stay in. The decision proved to be a waste of money as the right earbud failed after only two uses. Like I said, I sweat like a fish.