Celebrate in style with our 21" Mighty Birthday Rainbow Foil Party Balloon by Betallic, LLC Perfect for any birthday party, this Party Balloon is a must-have for any common theme. Made with high-quality, durable materials, this foil Party Balloon is designed to last throughout your celebration. Measuring at a standard size of 21", it will make a large and eye-catching addition to your party decoration. Our foil Party Balloon is part of the Meta-Related-Collection-Birthday-Party-Foil-Party Balloons-Standard-Size, ensuring a cohesive and coordinated look for your birthday party. Don't settle for ordinary Party Balloons, add a touch of fun and color with our 21" Mighty Birthday Rainbow Foil Party Balloon.