Cryogen White 8-1/2-x-11 Cardstock Paper 250-pk - PaperPapers 240 GSM (89lb Cover) Letter size Card Stock Paper - Business, Card Making, Designers, Professional and DIY Projects Color name: Cryogen White Color description: matte-milky white (muted white color, not a bright white) with a very subtle sparkle on the finish. Acid Free / Chlorine Free Size: Paper size identified as inches: 8-1/2-x-11 Paper basis weight: Quality Cardstock, virgin fiber pulp - 240 GSM (89lb Cover)