They provide magnification of 2x and 4x

Oliver Furniture has produced these leather straps

though he doesn't reveal how they're done

Delivery: This furniture is shipped by courier with a shipping fee to ensure its protection during transport

Oliver Furniture Wood reol, ekstra hylder - 5 stk. Model:5 stk. They provide magnification of 2xSet of 5 white shelves designed to fit Wood shelving units from Oliver Furniture. These shelves are ideal for additional segmentation of your shelves, and particularly suited for organizing books. Delivered complete with mounting brackets. Dimensions: L: 33 x W: 33 x D: 1. 2 cm. The products are made from birch wood and MDF. Oliver Furniture's pieces are crafted according to current Danish standards. The surfaces are treated with water based paint,