The size of a bike or for that matter anything for personal use depends upon the person and it can not be regulated universally. There are many things that should be taken care of while buying a bike.
The first and foremost thing you should notice is the physical attributes of the girl for whom you are planning to buy the bike. Take the girl to a reputed shop which has plenty of options to choose from and you will find that it is quite easy for you to buy the required bike.
Usually children above the age of eleven fall under adult category and you can ask for that kind of bike first. But you can always take the advice of the salesperson who will recommend you the suitable bike.
The first and foremost thing you should notice is the physical attributes of the girl for whom you are planning to buy the bike. Take the girl to a reputed shop which has plenty of options to choose from and you will find that it is quite easy for you to buy the required bike.
Usually children above the age of eleven fall under adult category and you can ask for that kind of bike first. But you can always take the advice of the salesperson who will recommend you the suitable bike.
