Running, jogging, working out at the gym, wherever you go — Sennheiser's adidas HD 220 Originals is the key to better sound on the move. And greater comfort, too. These lightweight 'phones feature a padded headband and soft, individually adjustable earcups for a comfortable, secure fit. The earcups create a tight seal to help minimize outside noise and enhance bass so you can enjoy crisp, full-range sound at lower, safer volumes. And since the noise reduction is passive, no batteries or active electronics are needed. The headphones even fold flat to fit nicely in the supplied pouch for storage and travel.