Print your own Photos,Invitations,More Using these 4" x 6" Flat Cards you can create your very own Invitations or announcements for your wedding,anniversary,or other celebration. These are also great to use as Postcards,Announcements,Photo Cards,and much more. Our 4" x 6" Flat Cards are designed to work with laser printers only (this product will NOT work on inkjet printers). Heavyweight Stock = More Professional Feeling Our Heavyweight Glossy 4" x 6" Single Cards are made from an 80lb cover (218 gsm) Laser Photo glossy cardstock and are a 98 brightness rating. Glossy on the front,Matte on the back. Both sides are printable.Flat Cards (non-folding) are great for making much More.Cards are made from a Heavyweight 80lb Cover White Photo Glossy Cardstock (216gsm)Measures 4" x 6" each - High Gloss on the front,Matte on the BackBoth Sides are printable with Laser Printers Only (This product will NOT work with Inkjet printers)100 Cards per Pack.