Great helpful to adjust viewing height and relieve neck strain! Product Size:42.5*23.5*14cm Package Size:44.8*25.5*4.3cm N.W.:2.2 kg G.W.: 2.7 kg This stackable shelf provides an additional horizontal surface on computer PC IMAC monitor, laptop notebook, home audio equipment or anything else that needs a flat surface. Double storage:Storage is so simple. Neatly accommodating makes your workplace instantly spacious. Commonly used stationery hand side, mobile phone pencil, tape, notes paper pass there is place to put, do not have to find everywhere, more convenient to use.