Momentum Custom In-Ear Headphones feature a unique bendable wire that allows you to get the most secure fit you've ever had with a headphone. The wire creates a custom ear-hook that fits snuggly to your ear and doesn't interfere with sunglasses or hats. They also come with the 3 most popular sizes of ear plugs along with our durable 2nd generation reflective cable for safety on those low light runs. Did we mention they are totally sweatproof and rinsable too? These will be your new favorite running headphones