“Justin Bieber” Filled Treat Bags. Pre-filled and ready to party, these treat bags are perfect for making all your Justin Bieber fans feel like pop icons! Hand them out during the party or before your guests leave as a way of saying "Thank You" for coming to your unforgettable Justin Bieber birthday bash. Each 9" x 7" plastic treat bag contains 6 items including an inflatable microphone, kazoo, flower ring, star clapper, beaded necklace and hair extension. Assortment may vary. (8 bags per set) © Bieber Time Merchandise, LLC.