Bookmark fresnel magnifiier:material is PVC, thickness is about 0.5mm, magnification is 3X. pattern, logo, color is available.  

Big Bookmark Fresnel Magnifier/DB205: 1. material: PVC 2. size: 189mm X 65mm 3. thickness: 0.5mm 4. magnification: 3X

Customers' logos/designs can be printed on the lenses

Light weight, cheap price, interesting and multifunctional.  As gifts to propagandize the company and the brand, it is useful and effectual.

Big Bookmark Fresnel Magnifier/size 189*65mm DB210