Item Weight 12.3 ounces Color Black Material Type ABS, memory foam Fit 0.5 to 1.5 inch DeskThe Armrest Extender size 13x29x13cm suitable for a desk that the thickness is 0.5 to 1.5 in, suitable use for home or office. Ergonomic Computer Arm SupportThis arm wrist rest support can reduce localized pressure on the wrist, and reduce pain of neck, arms and shoulders when last long time work. Adjustable Desk Armrest ExtenderCan range 180 degree, which is adaptable for your left and right hand, effectively relieve shoulder and arm pressure. Perfect choice for office worker. Easy-to-InstallThe armrest is extremely portable and installs simply and quickly. It can be carried easily in a briefcase or computer bag. Durable to UseMade of high quality ABS board, padded memory foam sticks to the surface, which makes you comfortable when working. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.