LEIGAO GIANT NUMBER BALLOON: At 40 inches in height, our gradient crowned number balloons are the ideal centre piece for any birthday party or wedding anniversary. Blending from rose gold to gold and then metallic blue, they are eye catching and the perfect photo prop. AIR OR HELIUM FILLED: These balloons come deflated but can be filled with air at home or with helium at your local card shop. Be careful not to overfill though as the mylar foil material is not flexible meaning that they will split when overfilled. QUALITY REUSABLE: Use it again by simply inserting a straw into the tab at the base of the number balloon and allowing the air or helium to be released from the balloon. PERFECT FOR ANY OCCASION: Whether its a Happy Birthday or a Happy Anniversary, our giant number balloons are the perfect party decor for any get together. DIMENSIONS ASSEMBLY: Height 40 inches (102cm) Width Varies depending on the number Weight 40g (All sizes are approximate). To attach the crown simply fold over a piece of sticky tape, stick to the balloon in your desired position and stick on the crown attachment.Products from NIUNIU's store