Love your MP3 player, but hate how the earbuds keep popping out while you're running or working out? Me too.

Sennheiser - the guys who make serious performance headphones and microphones - just launched a new Sport Line of portable 'phones, designed to stay in place while you sweat off last weekend's Buffalo wing binge.

Their MX 75 Sport model comes in a unique "twist-to-fit" design. When you put the earbud in, you twist the earpiece around until you find the most comfortable and secure position for the stabilizing pad that grips onto the ridges of your ear. It takes a little bit to find the right spot and get used to the feel, but once you do those bad boys twist in quick and are in there for the long haul.

And since everyone's ear anatomy is different, the MX 75s come with an ear adapter set containing different sized pads to help ensure a snug fit on just about any ear. (Unless you're a collegiate wrestler or fight in the UFC, then you're outta luck.)

How do they sound? Since they were from Sennheiser - and were jammed down in my ear canal - I expected a lot. And they delivered. Clear sound with excellent separation and solid bass. They've replaced the buds that came with my iPod. They had to. I can't get them out.

$49.95 with ear-adapter set, cable-clip and carry case.
www.sennheiserusa.com