Customized - Cookie Monster - Birthday Invitation To personalize this item: Please email The Mlange Market with your wording at themelangemarket@gmail.com all wording is your choice. Please include your Amazon order number in your subject line. Card Size: 4.00" x 6.00", paper thickness: 110 lb. premium quality 100% post-consumer recycled paper matte feel white finish card stock. Sold in pack of 20 invitations and 20 white envelopes. You will receive a proof by email within 1 (one) business day. Please check your email! We will not print and ship until we have a Final Approval! A delay in the approval of your E-Proof will delay the production turn-around time of your order!. Please note: it takes 2-3 business days turn-around time to print your order from the date you approve your order. Need more? We sell in any quantity over 20. Just contact us.