What's not to like about these headphones? Featuring great sound reproduction which you expect from Sennheiser, they're also completly foldable into their own little case so are perfect for travel. It took me a couple of tries to get it down, but basically they're designed so the ear cups turn 90° and then fold closed. (Headphones will lock in open and closed positions.) For replaceable ear pads and headband padding, just order directly from the Sennheiser site.

The PX 100 high-resolution sound and fast bass response ( due to system "twin damping") make these the perfect match for your mobile audio. These are coming on vacation with me, so get your own for $45.83 at Amazon.