Large Birthday Gift shape balloon looks great when accompanied with other balloons in a balloon Bouquet.? It has self-sealing & reusable properties. Can be used as birthday decorations for boys, birthday decorations for girls, and also for adults or your pets. Balloons arrive uninflated and the size of the balloon measures 28 inches on inflation. To inflate it with helium please visit your closest Wanna Party store or contact any helium gas provider near you. Pack of 1.