The divine proportion of nature. Biological configurations, such as the arrangement of tree branches, leaves on the stem, a snail shell, etc... It is an infinite sequence of numbers; starting from 0 and 1, they are added together so that each number is equal to the sum of its two previous ones: 0, 1, 1, 2, 3, 5, 8, 13... and has numerous applications in science, mathematics... All Popelin Barcelona fans are designed by us, screen-printed and handcrafted in our workshop. We use natural materials such as cotton fabric, polished and waxed natural wood, so each piece has a soft and pleasant touch, respecting the environment. The fan is delivered with an elegant cardboard box, which contains an explanation of the product, making it a perfect proposal as a gift.