Numbers foil balloon for air fillings. Ideal decoration balloon. Design your desired letter garland yourself right away. Fill with an air pump and hang on a string or stick on a wall using the eyelets provided. Size: 35 - 40 cm height when unfilled. Material: coated foil balloon. Suitability: for filling with air using a hand pump. Use: as a number garland or single balloon. No levitation: this foil balloon will not float with helium because it is too small. Tip: You can fill with breathing air through the adhesive valve with a drinking straw. Valve: integrated automatic closing valve (inflate - press valve shut - done) can be repeated a few times.