At first I was very pleased with the Armband.Eigentlich very comfortable to tragen.Doch after a few days I got an itchy skin irritation and skin peeled off, as in sunburn, where the closure sitzt.Für changed a few days on the other arm, Allesgut .Wieder changed, 3-4 days and again the irritation in the same place. Changed arm and after a few days irritation at the other Arm.Das problem so the closure seems to sein.Denn as I said: Otherwise really comfortable to wear.