Tips:Only need to take this product left and right shake a moment,making all sands concentrated in the bottom,While the fixed proportion of the air inside will be scattered into small bubbles,Then it can be reversed.At this moment, the flow sand exchange.Watch mountains, valleys and dunes create before your eyes!It is more beautiful after a longer falling time.If there are only a few slender sand lines falling down with a slow and stable speed,don't worry,it's normal.It usually means you can get a perfect pattern.Specifications:Item: creative deep sea quicksand pictureSize: 17''Material: glass + solid wood Color: multi-color optionalOrnament form: pendantStyle: modern minimalistModeling: abstractionPacking: carton packingPackage list:1 X round sand paintingNotes: All our pictures are taken and measured in kind. Due to the difference in light and display and measurement tools, there may be small chromatic aberrations and dimensional errors. Please purchase carefully. If you have any problems with our product, please contact with us first, we will solve it for you within 24 hours.