Jumbo Balloons: Combine these 40 inch number balloons with other number balloons to create any combination of numbers you need. These big balloons will impress at any party. Party Decoration: Make your birthday, anniversary, or wedding even more playful with these number balloons. They create the perfect backdrop for any party decor and are sure to impress your guests. Durability: Made of high-quality aluminum polyester foil, these balloons are designed to withstand multiple uses and will stay afloat for a long time when filled with helium. Won't easily burst or leak air. Easy to Inflate& Reusable: Each balloon comes with straw. Simply insert the straw and blow it up with your own breath or use a handheld pump. When the party's over, deflate them with a straw and store them in a safe place for future use. Package Contents: Each order includes one 40-inch number balloon and one straw. Simply inflate the balloon using the included straw, and you're ready to party!