These self-inflating Strawberry balloons are perfect decorations for berry-themed birthday parties, baby showers and other events. • Material: Mylar. • (6 pcs./unit) • Size: 3 1/2" x 4 1/2" with 8" plastic stick. • Includes six balloons and six sticks. • Simple assembly required.• Smash the packet inside the balloon to activate the inflating action.