Saflyse A4 NEW 7 Adjustable Positions Black Metal Desktop Document Book Holder,document Holders with Interlaced Feet Made of stainless steel, sturdy and compact. 7 grooves offer 7 different viewing angles. Includes a removable line guide for highlighting text. Children can effectively correct bad writing posture. So that it can effectively prevent children's myopia. To protect the Children eyesight. Reasonable design, easy. It is convenient to use when you are typing. You don't need to lower down your head to look at the paper. It can also hold books for easy viewing.