Baby Shark invitation set for 8 guests. Bring your friends together for a Baby Shark themed birthday with our colourful Baby Shark invitations! Pack includes 8 invitations, 8 envelopes, 8 stickers to seal the envelopes and 8 save the date stickers for your guests to put on their calendar. Invitations measure approximately 16cm x 11cm and are a postcard style with plenty of space on the back for all your party details.