1.The diary book with a lock is very practical. 2.It's dexterous and easy to carry. 3.Beautiful

1.The diary book with a lock is very practical. With the lock ,you could write your secrets in the diary book . So ,you could have your own another space .

2.It's dexterous and easy to carry.

3.It's beautiful ,and sold well in supermarkets .

4.It's popular in the world.