Wausau Astrobrights Premium Cardstock, 8.5 X 11 Inches, Lunar Blue, 100 Count (20921) Weight: 24 lb / 89 gsm Writing Paper Color(s): Lunar Blue Paper 100 Colored Cardstock Sheets; Size: 8.5 x 11 Color Paper Inkjet, Laser, and Copier Guaranteed (Printer Paper / Copy Paper), Acid-Free and Lignin-Free Printing Paper, FSC Certified, Made in the USA