Sleeves are protective plastic covers used to prevent cards from getting bent or scratched. If a player uses sleeves, they must all be the same (including on the first vanguard) so their cards aren't marked. However, G units and Imaginary Gift must have different sleeves.
Sleeve pack contains from 53, 60, to 70 copies of size 89x62mm (mini).
Display contains 12 packs and a carton contains 6 displays.
Volume pack costs 500 yen (roughly 4 Dollars, tax included).
Limited edition costs 700 yen (roughly 6 dollars).