Size: Invitations measure a generous 5“ x 7”, envelopes is 5.2" x 7.2", diaper raffle cards and book request cards are 2" x 3.5". Package includes: Each pack Includes 50 double-sided invitations, 50 envelopes, 50 diaper raffle, 50 book request cards. Cardstock: All cards are made of heavy-duty paper at a grade of 300 grams per square meter. Using oil pen (permanent) will get a better writting effect, because these cards are made of smooth art paper. If you use normal pen, pease wait a moment until the writting dry. Safari invitations: Safari invitations are suitable for your baby shower, baby sprinkle party. 50 Safari Baby Shower Invitations, Jungle Animals Invitations Macthing Envelpoes, Diaper Raffle Tickets, Book Request Cards, Safari Animals Invitations