Save money and ensure fun with this 2 pack of bubble refill solution. Bubbles have long captivated children for many reasons, such as their airy movement and their iridescent colors. Bubbles also feature in lots of children's toys, such as bubble blasters and bubble wands. This solution will help you keep beautiful bubbles flowing in the classroom all year long. Includes 2 2-liter bottles. One 2-liter bottle fills 17 4-fluid-ounce bottles.