Usually what people put in their bag?wallet,mobile phone,paper towels,keys,and tjis is only a few basic things,may according to the personal habits,it is also needed that dressing case,chewinggum,etc.So many things in fixed,how do you do when you need the keys in a moment?four or five minutes will be waseted to find it out.You know,key-bag is just the goods to bring a convenient life for you.