The exterior is smooth and matte black.
The interior is lined with a thin black velvet, soft, perfect to protect its content.
The upper shell has a net halfway up, allowing to stay there, for example, an additional cable, a small player, etc.
This Case is particularly well suited to the Philips Fidelio M1, but I said that in order to position it ideally it should rotate the headphones and slightly reduce the size of the hoop. If for this headset model, you set up the hoop to position 2, do not worry, otherwise, it will be necessary every time the little required setting.
Given the particular shape of this case, difficult to give precise dimensions, but if this can help you, it is about 6 cm thick (measurement taken with the closed case), so it is imperative to have a Nomadic headphones and earphones which can pivot, otherwise it will not fit. Additional indication, if one does not rotate headphones Philips Fidelio M1, it is not possible to close the case.
Another indication that could be useful, a Philips Fidelio L1, although having pivoting earcups, does not fit ... it is too large.
I enclose my review two photos showing a Philips Fidelio M1 housed in this case.
For my part, I am fully satisfied with this product, it is well done, seems robust, which makes it even better, with an excellent price / quality ratio.