This code will grant your account with 16 days of membership on both RS3 and OSRS, this code is obtained from a white-hat and completely legal source so you don’t have to worry about your account.
Proof that these work, this was on my own personal account:
How to redeem:
1- Simply go-to http://www.runescape.com/store_locator
2- Log in
3- Enter the code
4- Confirm and enjoy!