I own the mumbi sleeve for some time now and am completely thrilled. The shell is very well on the iPhone. The flexibility of the material you have, however, not be afraid of damage to the iPhone have one and unpack cause too frequent. All buttons can be wonderfully operate it. You have to, for example, press the stop button with a very high effort with some other cases. Therefore, the shell is functionally very good. The gaps at the lower end (headphone jack, charger jack and speakers) are sufficiently large. If the cut-out for headphones designed to just fit headphones with slightly larger plugs not through the envelope. This can be very annoying. There are, however, even with my on-ear headphones with an above-average big plug no problems. - Very good solved! The feel of the article surprised me positively. The shell feels very high quality. The surface has a slightly matt / velvety. This leads unfortunately a bit early to small scratches that can but (so far) with gentle rubbing polish can speak again. Probably not quite as intended but still useful is the Red mumbi logo on the back. In addition to the visual upgrade the rubber logo is a kind of anti-slip finish on slightly sloping tables. For this I am quite thankful just in the auditorium because the mobile goodbye to so in a careless moment not on the floor.
I am completely satisfied with this product and may therefore issue a strong buy recommendation on my part! Especially at the price an unbeatable protection for your mobile phone