This sleeve set includes 11 packs of sleeves, which is enough for the base game and all its expansion cards:
8 Packs of Project Card Sleeves = 400 sleeves
1 Pack of Corporation Card Sleeves = 50 sleeves
1 Pack of Prelude Card Sleeves = 50 sleeves
1 Pack of Global Event Sleeves = 50 sleeves
Total: 550 Sleeves.
Thickness: 100/120 micron on front/back.
NOTE: Sleeves with printed back are inherently sensitive to rough shuffling. They are made for aesthetic purposes. The sleeves themselves are not fragile, but rough handling may lead to the printed layer peeling off over time.