A Lovely Blue Shade of Heavy Cardstock from Doodlebug Company.
I have purchased Doodlebug products for many years, at least 15 years so far! They have so much cardstock in different finishes and so many, many colors. This particular shade is a Blue named "Bubble Blue".
I chose to coordinate with the 12" kit from Photo Play's "French Flea Market". Doodlebug also has a large amount of different designs in occasions and holidays to choose from.