The powerful noise isolation built into the SE535 In Ear Monitors would be absolutely ineffectual if the tips were not a proper fit. You get a full range of tip sizes and materials in the package, so you can be sure to get the right fit and maximize noise isolation. Gently draping over the ear and connecting firmly with a gold-plated, rotating lock mechanism, the Kevlar reinforced cable is easily managed so you can focus on what matters- your music. Select Shure products sold on Massdrop are supplied by a vendor who usually caters to retailers overseas, so if you see a few unknown characters on the box, pay them no mind.