How to use discount code ?

Note: the code is valid for iPhone cases and Jewelry mixed use.

BUY 2 GET
1 FREE 		code: 1FREE add 3 items use code
BUY 3 GET
2 FREE 		code: 2FREE add 5 items use code
BUY 4 GET
3 FREE 		code: 3FREE add 7 items use code
BUY 5 GET
4 FREE 		code: 4FREE add 9 items use code