have spent many years searching for the perfect sport headphone. I was excited to see the new Sennheiser Sport line. I knew I had to try them out. I chose the LX70 model because I liked the headband and the one-sided cord. In the past I have had great trouble with sport headphones. They have been too heavy to stay on my head. The ear buds have been too large to sit comfortably in my ears. The cords have worn out on one side rendering one speaker useless. I love the Sennheiser LX70s because they are so light weight. The flexible headband keeps the ear buds secure and the headphones stay on my head. I do not have to adjust the headphones every 30 seconds while running. I can workout and forget that I even have headphones on. The one sided cord keeps the headphones from becoming tangled in limbs and free weights.
 

I am giving these headphones 4 stars because they not only have descent sound quality but the earbuds are a good fit. The package comes with a few different pads to put on the earbuds, and I found a set which fitted well. Highly recommend.