It's card stock! What can be said about plain white card stock? Staples brand was the cheapest. It runs through our Copystar CS6551ci perfectly. It will double-side if you use the 'cardstock' media setting for the printer and feed it from the MP tray.
I bought this to make holiday cards and birthday invitations/thank you's and it works great. Our copier prints beautifully on these. I have used them with a laser printer and an inkjet printer and they hold up well. They're also nice and bright in addition to thick. Totally adorbz for any use.
Upon delivery of 2 reams of white card stock both reams were opened and a couple of sheets were damaged. This happens quite frequently when we order reams of paper.
I always make my own cards and on these cards I use my own photos. The photo always comes out in bright beautiful colors. I get so many compliments on the cards I send out. I also print some of my photos with encouraging messages on them and put them in a frame to give to our Church 'shut inns'. They seem tp really appreciate them. Thank you I am Sudie Early of Baskerville VA 23915