Premium Cardstock Upgrade - Perfect for Acrylics, Markers & Heavy Coloring (Physical Product: Add-On)

Take your custom coloring book to the next level with our Premium Cardstock Paper Upgrade.

This add-on is ideal for artists who love using acrylic markers, gel pens, brush pens, or other rich, high-pigment tools and want extra protection against bleeding, feathering, or warping.

Our upgraded cardstock is thicker, smoother, and more durable than our standard high quality coloring paper—giving you a professional coloring experience and pages that hold your artwork beautifully.

Why Upgrade?
• Thicker cardstock designed for heavy ink + acrylic markers
• Minimal bleed-through, even with vibrant or layered coloring
• Smooth, high-quality finish that makes colors pop
• Keeps your book looking clean, crisp, and long-lasting
• Ideal for display-worthy pages or gifting

Perfect For

✔️ Acrylic paint markers
✔️ Alcohol or gel-based markers
✔️ Metallic, glitter, and specialty pens
✔️ Artists who want stronger, more premium-feeling pages