5" x 7" Greeting card blanks with white envelopes. Choose your card blank colour and quantity from the drop-down menus. The envelops are 100gsm plain bright white and the card blanks are 250gsm to 260gsm. Our coloured card blanks are the same colour on both sides. Pre-creased which means they have the fold line in the middle for easy folding without needing any special tools.