The recess for the magnetic connector is a bit too small. I have to cut away material about 3mm from the bottom with a small nail scissors (now it fits and does not fall luckily on). I bought the black model (allegedly the colorful cases no recess for the magnetic connector have).
The sleeve is not made of soft silicone schwabbeligem but already is towards moldable plastic, but feels nonetheless very enjoyable and also does not look cheap. It sits very close to (like a tight leather trousers) :-) I guess that it will not be deformed particularly in the longer term. I am very pleased with the envelope after the modification with the nail scissors and can only highly recommend.
The protective sleeve is very good in the hand and is very non-slip even on smooth surfaces ...