DIMENSION: Our birthday invitation cards are measured 4"x 6" (W x L). Double-sided. QUANTITY: You will receive 20 invitation cards with 20 white envelopes. MATERIAL: The cards are made of paper that is of high quality and sturdy. In addition, the paper is easy to write on and you don't have to worry about ink penetration. DESIGN: With beautiful design and bright colors on both sides, the invitation cards will attract the attention of guests. A perfect choice for inviting your family or friends to birthday parties. DIMENSION: Our birthday invitation cards are measured 4"x 6" (W x L). Double-sided. QUANTITY: You will receive 20 invitation cards with 20 white envelopes. MATERIAL: The cards are made of paper that is of high quality and sturdy. In addition, the paper is easy to write on and you don't have to worry about ink penetration. DESIGN: With beautiful design and bright colors on both sides, the invitation cards will attract the attention of guests. A perfect choice for inviting your family or friends to birthday parties.