Such toy balloons are made of Mylar or foil material. They are perfect medium of advertisement and decoration of parties. You can have your advertisement or wishes printed on the balloon. They can be filled with helium or hydrogen. They are self-sealed after being filled. Some of them have sticks, can be held in hand. Because they are made of mylar material, they are more durable than other kinds of balloons. You can also design the shape and the pattern of the balloon and send them to us for producing.