USE: Mobile sand paintings are just what you need to decorate your home or office, and make a great educational gift for your kids or grandchildren. Watch 30 seconds to learn how nature works Outstanding quality:It's upgraded version of classic type, repeatedly screened sand, carefully selected glass, a new design, all of which ensure its quality. Product size: 7.5x7 inches / 19x17.8cm. Natural beauty: lead-free high-transparency glass is as crystal clear as water droplets, allowing you to enjoy the beauty of quicksand. Completely composed of special sand, water, air bubbles, and instructions are included in the package. The details of the product are delicate, fine sand, bright colors, distinct layers, and the 3D effect of the flowing patterns is excellent. Operation Methods: Just hold the product and shake for a moment, then the painting sand will move down to the bottom while the air in a fixed proportion will be also changed into small bubbles. It can be horizontally placed upside down later. Finally the quicksand will slowly move down for your enjoyment at this moment. Leisure Sand Art: Observe the different designs of the sand as it falls, relax in the soothing movement of the quicksand,Can relieve stress and eye fatigue, each round is different and charming. Soothing, relaxing, just cool