The plastic base: OK. In that respect, its as easy as the M570. These are the best sandals for my toddler! Contents include:Hard caseHeadphones1 x Charging Cable1 x Audio Cable for sharingManualPros:- Headphones can be folded and stored in a case that makes it very good for travel. Let me tell you… This one does all that and more. Pide tu talla habitual, pero ten en cuenta que es tejido compresivo y te quedará apretado, es lo que se busca con este tipo de prenda. After a couple of weeks, the boxed-in and veiled sound disappeared, and the bass became stronger. Ive heard from a lot of reviews mention these are heavy on volume and bass, but I had some problems with this. As I mentioned, the ANC is pretty subtle. It also cancels the extra features that come with the Boom Ultra Ears app.