Bobo balloons are made from a stretchy, transparent plastic material. This material provides a clear or semi-transparent appearance to the balloon. One of the defining features of bobo balloons is their transparency. This allows for better visibility of any designs, messages, or special effects inside the balloon. Bubble balloons can be filled with air or helium. These bobo balloons do not include a self sealing valve. They can be sealed with a heat sealer, ribbon or tying the tail into a knot. Bobo balloons are commonly stuffed with confetti or other items to create a gorgeous crystal ball look. Great for centerpieces, gift ideas, bouquets or part of your balloon decor.