I gave the envelope to my friend birthday and was very surprised. Positive. It is a structured, cleanly designed (all edges smooth) material with a subtle pressure that is indestructible. From a distance the shell seems like fur, but is a slightly softer plastic (thick) that covers any opening of the appliance. Indulges the hand and is on all sides of a guaranteed protection from bumps and scratches (except the display of course;)).
