These balloons have an automatic sealing valve. They can be filled with air so they can be fixed to the wall or can be filled with helium so that they float. These balloons will make a great decoration for your children's party. Or buy as a surprise gift for any occasion! Please note that these balloons will come flat and not inflated, you must inflate these balloons yourself. The Sonic character balloon measures aproximatley 29 and the tails character balloon meausres aproximatley 33 . These balloons have an automatic sealing valve. They can be filled with air so they can be fixed to the wall or can be filled with helium so that they float. These balloons will make a great decoration for your children's party. Or buy as a surprise gift for any occasion! Please note that these balloons will come flat and not inflated, you must inflate these balloons yourself. The Sonic character balloon measures aproximatley 29 and the tails character balloon meausres aproximatley 33 . Perfect for any Sonic and Tails fans! ASIN B0CZ476PFF Size 29 inches, 33 inches Color Blue, Orange Theme birthday Material Foil Occasion Birthday Brand Name Toyland Unit Count 2.0 Count Part Number cs Manufacturer Toyland® Model Number CS Item Type Name balloons Item Dimensions 8.8 x 6.2 x 0.5 inches Special Features Self Sealing Subject Character Sonic and Tails Included Components balloon CPSIA Cautionary Statement Choking Hazard - Balloon, No Warning Applicable Global Trade Identification Number 05030005021088