Sennheiser, has introduced an all-new Street Line of headphones. The combination of style, innovative design and outstanding performance has resulted into the creation of five new models of headphones. All five models feature the exclusive Sennheiser Basswind System for remarkable deep-bass power and high definition sound. The MX 55V Street features unique new “Twist-to-Fit” design for comfort at the ear-canal. The MX 51 Street is a classic “ear bud” design; it also features Sennheiser transducers which provide clean sound. A set of different-sized soft-rubber ear pads is provided to ensure ease, and a stylish carry case is supplied with it. The MXL 51 Street is very much similar in design; the only difference is that it joins the ear buds into a lanyard layout for safety and comfort. The OMX 50 Street features an “ear-loop” design. The OMX 52 Street too does not differ from the other Street Line models. Overall these lightweight headphones are comfortable and are capable of producing high definition sound. You can customize their appearance with the included exchangeable design covers. A carry case is also included in the package.