Inspired by the Fibonacci sequence, a mysterious mathematical formula hidden in nature, such as the shells of snails, the scales of pine cones, and sunflower seeds, this shade is designed with that in mind. Although it appears to have a simple structure, the six shades change in width and angle, forming the most beautiful spiral. This is the S size, with a diameter of 37cm. After purchasing it new, I tried installing it once, but it didn't match the atmosphere of the room, so I removed it. It has only been used for one day. All accessories are included, but the outer box is not. Please see the Le Klint website for detailed specifications. Thank you.