Because it is easy to carry around. Convenience and not heavy. Have the attention to material selection. An exact supplier until it is agreed among the celebrities or the idols do have as many sales.
For easy portability Convenient, is not heavy A conscious production of such material. The exact distribution of production. It is widely accepted among celebrities or your idol has been made to sell a lot.
Because of easy portability, convenient and not heavy, with attentive production in selecting raw materials. The source distribution. Widely accepted among the stars or the Net Idol, has received a lot of sales