The best earphones for open spaces sports. Or should I say bonephones? They provide a clear sound even in noisy environments, whilist you can also hear the surroundings. The built quality is very good, they seems to be a high end product. If you want to practice sports on your own outdoors, they are for you. Light, comfortable, convenient, safe, good sounding. You have to get used to the small vibrations they produce, but, that is not an issue. Fully recommended.