Shimmer Midnight Blue 8-1/2-x-11 Cardstock Paper 100-pk - 290 GSM (107lb Cover) PaperPapers Letter size Card Stock Paper - Business, Card Making, Designers, Professional and DIY Projects Color name: Midnight Blue (dark blue appearance) Shimmery color is on both sides of this paper Paper size: 8.5-x-11-inches / Letter Size Paper basis weight: 290 GSM (107lb Cover)- this is cardstock paper. Finish: Metallic (this has a subtle metallic finish)