Each package of Sweet 16 Sparkle Party Invitations also includes Thank You Cards. There are 10 invitations and 10 thank you cards measuring 3 3/4" x 5 1/2". Includes envelopes as well. The invitations read "You're Invited!" on the front. On the inside, there are spaces for invitee's name, date, time, place, and RSVP. The Thank You Cards read "Thank You!" and blank on the inside so that you can create a personal message.