I just happened to come across and picked up a set of these Budfits while I was at Micro Center. They are pretty comfortable (soft rubber) and awesome. I had been looking for some gel ear bud headphones but hadn't come across any. With this accessory, I can now switch them to another pair of ear buds. I'm going to try them when I start jogging.

I recommend.

Edit: I should note that they only seem to work with the ear buds with the skinny base on them. If it's the old school fat ones, they don't fit as well.