The part number and UPC conform with the official Sennheiser part. It didn?t seem in my best interest to take a chance with the return. The small annoyances cause it to lose its 5-star rating but I still thoroughly enjoy the MW60 and am happy with my purchase. But even with that very small bit of tightness in the beginning theyre still way more comfortable than headphones Ive purchased in the past that squeezed to the point of giving me a headache within 15 mins, these never even came close to applying that much pressure to ones noggin. You cannot beat this for the price. Good quality ?? My husband had ordered a pair of these a week or so before I did and he absolutely loved them. I just did not want to go return and go thru it again. I only wish they made them in different colors! And I love the wedge heel.