Get your party guests' engines revving up for fun with these exciting Hot Wheels™ Speed City Invitations! Featuring a sweet muscle car busting through the front of the invite under the words "It's a party!", these paper invites are a surefire way to get your guests racing to your event. Enough for sending to 8 birthday party guests, this pack of invitations also includes envelopes, sticker seals and even "Save the Date" stickers to help your party guests remember this awesome occasion. Now that you've got your party started, fill it up with even more fun with our fantastic selection of Hot Wheels™ party supplies and decorations sold separately online. Paper. (8 pcs. per set) 5 1/2" x 4". © Mattel, Inc.