Material is extremely thin and didnt trust it to hold my luggage on a trip. I also own the closed back, HD598CE. Comfortable, perfect fit with a great design. It protects the case and keeps it from opening, but its a poor design and kind of annoying to use. Product haf a strong chemical odor when first opened the package, but it disapeared almost immediately after airing out. I looked up videos on the internet of similar set ups. Recibir un producto perfectamente embalado me encanta y que venga precintado con plástico es una garantía de que serás el primero en abrirlo. Much sturdier! You will get excellent sound quality, great comfort, 11-12h play time and. I wear a pair of glasses.