The Dominion Card Holder will hold cards for up to 4 players. The copper and estate trays are the right size for when actually playing so you do need to have the 4 player hands assembled and stored in the kingdom cards trays instead of with the other coppers and estates.

This set includes: 

15 holders for Platinum/Kingdom/Victory cards
2 Holders for Curse and Gold cards
2 Holders for Copper and Trash
1 Holder for Silver
2 bowls for tokens
2 tokens lids
and 2 card tray Lids.

If you would like the holders printed in different colors just let me know what colors you would like in the comments section of your order