Personalized Holiday Cards - Christmas Tree (30 Cards & with Envelopes) Ships Right Away!! Personalize the greeting on the inside of the card for FREE! Use Amazon's NEW Customization Tool to Create Personalized Cards. Premium 100# Classic Crest Bright White Cover Stock with blank matching envelopes. 8.5" X 6". Scored but shipped flat in case you want to hand write a personal note. Designed for writing on the inside of the card.