Hewlet Packard HP Sample Packs of Half-Fold Glossy/Matte InkJet Photo Greeting Cards with Envelopes 15 Count Sample Packs of 15 Inkjet cards with envelopes (Packaged in Heavy Ziplock from HP) Paper size: 8.5" x 11", folded 5.5" x 8.5 inches White Glossy coated one side/ Matte finish other side Weight: 80lb Cardstock (58lb Bond) BONUS: CD with ADOBE PhotoDelux 4.0 software, special templates, and hp instant print projectsSystem requirements: windows 95B/98/2000/ME/XP