The big hit is the belt clip itself, because these links arms as with other manufacturers from the top in the belt, but a leather flap with snap closure encloses the belt from below, thus avoiding a simple unhook. Especially when hiking this closure technology is particularly well, so the unit can never fall from the belt. The pocket cuff is kept closed by two powerful magnets.
I can really recommend this bag to anyone who owns a Sony Xperia Z1.