This solid 4X dome style solid magnifier sits directly on the book you are reading. Because it has no frame and is made of the highest quality magnifying acrylic, it allows maximum transmission of light to enhance the already large 4X magnification. When reading, this clear dome magnifier can easily glide over the page. The 3" diameter offers an exceptionally large magnifying surface for 4X magnification. A flannel drawstring carrying bag is included.