Letter combination: Happy Birthday (13 Pieces)Color: PinkDesign: Letters from H-A-P-P-Y-B-I-R-T-H-D-A-YMaterial: Aluminum FoilHeight Before Inflating: App. 35cm/14inchHeight After inflating: App. 32cm/13inchCondition: 100% Brand NewPackage Included:1 Set x Letter Balloon (H-A-P-P-Y-B-I-R-T-H-D-A-Y)Package : It Includes only 13 letters??This balloon is automatically sealed， the gas will automatically kick seal， this balloon is relatively small， only filling the air， hydrogen or helium filling is not fly??Letters balloon usually affixed to the wall??Ideal decoration for birthday promotions??Great gift for kids??Make you party full of sweet and romanticNote: Compare the detail sizes with yours， please allow 2-4cm differs due to manual measurement， thanks (All measurement in cm and please note 1cm=0.39inch) Due to the difference between different monitors， the picture may not reflect the actual color of the item. Thank you.[1] to foil balloon must be inflated slowly， can pump to 90%， and then use a straw to blow， easy to control volume， in order to avoid bursting. If there is a case of two layers of aluminum foil sticky encounter， be sure to stop inflation， gently pull the hand two layers of aluminum foil and then inflated， or easily damaged.[2] sharp objects / not clean ground / direct sunlight and excessive extrusion， are easy to get the ball skin damage， burst.[3] aluminum foil balls should try to save the tile folded， must not casually crumpled， in addition， to keep dry， rub not use water.