Ok, so you buy a pack of what ever cards you want. On the back their will be a mailing address you send them for a free insert card at the same odds you get in packs. I will post addresses of the componies. NOTE: THERE IS A DIFFERENT ADDRESS FOR EVERY TYPE OF PRODUCT THE COMPANY HAS

[u]ADDRESSES[/u]
[b]NBA ADRENALYN XL (PANINI)[/b]
NPN 2011 Panini NBA Adrenalyn Basketball
2300 E. Randol Mill
Arlington, TX 76011-6333

[b]MLB Opening Day(Topps)[/b]
NPN 2011 Topps Opening Day Baseball
P.O. Box 2220
Duryea, PA18642

[b]MLB Heritage Baseball(Topps)[/b]
NPN 2011 Topps Heritage Baseball
P.O. Box 764
Pittston, PA 18640

[b]NFL Adrenalyn XL(Panini)[/b]
NPN 2010 NFL Adrenalyn XL TCG Cards
2300 Randol Mill
Arlington, TX 76011-6333