This is the mesmerizing desktop decoration that forms delicate sand dunes when flipped upside down. Handcrafted in Austria, it uses a combination of fine sand, water, and air, to produce a hypnotic motion of elements that create breathtaking patterns and designs. When tilted or flipped, its light, dark, and golden sand grains re-adjust as gravity and momentum form flowing hills and valleys. Includes injector that lets one adjust the amount of air inside the window. It flows for 15 minutes to two hours depending on the angle of the tilt. Black beech wood frame. 8 1/2" H x 13" W x 2 1/2" D. (2 lbs.)