Lavender with Wildflower Seeds Background Cards (approx. 5 x 7 inches): 250-300 gsm heavyweight cover 100% recycled cotton processed chlorine free. Handmade cards are embedded with small green leaves and they will vary in thickness and color. Background cards are used for our unique layered invitations. A printed overlay embellishment and envelope is required to complete the look. Click to view complete list of blank invitation supplies.