Discovery Bubble Maker DeluxeRecommended Age: 3+ Did you know? Bubbles are made up of air that is surrounded by a thin layer of water. This layer, or skin, wraps around moving air, trapping it inside. Bubbles can stretch and become all kinds of crazy looking shapes. But if you seal a bubble by flipping it off your wand, the tension in the bubble skin shrinks to the smallest possible shape for the volume of air it contains. Wave the wand in the air for tons of extremely large