The shape of the Bonniers lantern captivates with its simplicity and understated elegance. The proportions impress with their balance. The glass cylinder is made of mouth-blown glass and displays intentional signs of craftsmanship, such as small air bubbles and streaks. The metal body is made of iron, which is powder-coated to protect it from corrosion. This does not mean that Bonniers should be constantly exposed to the elements, as this could lead to rust. Therefore, it is advisable to bring Bonniers inside after a lovely summer evening. Limescale stains and wax residues should not be removed from the glass with sharp objects, but rather cleaned by hand with dish soap and a little vinegar.