In the late 1960s, sculptor Günter Ferdinand Ris teamed up with architect Herbert Selldorf to design the Sunball garden chair. It can comfortably seat two adults, be rotated around its axis, and is even fitted with its own side table. Thanks to the hinges, the plastic sphere can be completely closed to protect the corduroy seat from the elements. Moreover, the sphere doubles up as an adjustable sunshade. The chair is thus also a kind of independent living capsule in which users can lean back and relax. The versatile plastic material, which was new at the time, enabled large round shapes and bright colors. The spherical shape embodies the enthusiasm for space travel and futuristic visions in the era known as the Space Age. For example, the Sunball reflects the shape of a space helmet while its name refers to the shape and color of the sun. Part of the furniture collection of porcelain manufacturer Rosenthal AG in Espelkamp, it was only available for three years. In addition, a light strip, loudspeakers, and an integrated radio could be ordered as optional extras. Costing around 4,000 Deutschmarks (more expensive than many summerhouses), this garden chair was considered an almost unaffordable piece of outdoor furniture.