They measure 5.5 by 8.5 cm
 
Suggestions
If you typically move alot with you pc eg behind your phone or use pc holders double laminated would be the best option
 
If you choose lamination both sides the back side will be laminated matte..
eg you choose lamination both side then choose holographic star.. the front side will be holographic star the back side will be laminated matte
 
Price is for the a set, not one member :)