Yes, our cardstock, (120 lb. white,) will not bleed through which makes it the perfect card stock for single layer Copic cards. And, because of the ultrasmooth finish, you need less ink which makes your markers last longer. The ink doesn't absorb as quickly which allows more time for blending too! And since you need less ink, the color will be a little bit softer, however, you can add more color for a more vibrant tone.
I hope that helps.