Features:· Ideal Decorating your home or other party occasion.· Use for birthday, birthday party, wedding,holiday, business, celebrations and other on-site decoration.· An ideal gift for your children or your friends.· Bright colour and the sizes are big enough.· Made up of 13 letters.· Use a straw to blow the balloon. STRAW AND STRING INCLUDED.· Fast and simple at-home inflation – inflate with enclosed straw and it’s ready in 10 minutes. Specifications:· Each letter when inflated is approximately 24cmx 34cm.· Size:16 inch (40cm approx.)· Material: Foil How to Use:· These Happy Birthday Letter Balloons will stay inflated for days.· The self-sealing balloons will arrive uninflated.· Simply insert the straw into the valve at the bottom of the letter and slowly blow to inflate.· When the balloon is sufficiently inflated, pullout the straw and pinch the self-sealing valve.· Warning: All Balloons are uninflated when you get.Feedback: If you are satisfied with the items and our service, please take a minute to leave us a positive feedback, we will gladly do the same for you h