When you get Coupon from us, how to use it?
1. Login to our store: www.os-store.com
2. Choose your item ~
add products you want to cart, go to your shopping cart, fill in coupon code you get.
If direct to checkout onepage, bosish “REVISE ORDER” to fill coupon.
It is easy, isn’t it? hozir, take your action to use it, save your money!