Package Includes: 20 packs of fill-in style birthday invitation cards with 20 envelopes. This set is for you to plan a nice birthday party. Size: Each invitation card is 4" x 6" inches, with 20 matching envelopes, easy to carry and keep. Design: It uses advanced printing technology to print bright colors and cute patterns on cardboard, designed with space to fill in and details meticulously presented. Quality: Birthday invitations are made of sturdy cardboard for guests to write on comfortably. Use these invitation cards to invite guests to a memorable party.