Thermoweb Gina K Designs Cardstock: Prime Time. Start projects off right with high-quality Premium Cardstock from Gina K. Designs for Therm O Web! Prime Time colors include Red Velvet, Sweet Mango, Wild Dandelion and Grass Green. Great for paper crafts, scrapbooking and card making. This package contains 12 sheets of 8.5” x 11” cardstock (3 sheets of each color). 100lb cover. Exclusive color palette coordinates with other products in Gina K. Designs for Therm O Web line. Acid-free