Furniture Design Kitten Stool by César Bejarano The body of the stool is made of folded and cut recycled aluminum while the seat is made of 100% recycled PET felt. The felt seats are removable and interchangeable, and the owners can even make their own customized seats. Each stool comes with 3 different felt seat designs, each with a different texture. The stool is easy to ship, as it can be piled one on top of the other and the seat attached in site. It's materials and design make it perfect for indoors or outdoors. The stool is slightly curved to give it structural strength. The space under the seat can be used as storage space.