In Denmark, "Folding stools were initially introduced as an intellectual challenge," writes architectural technology company Bimbear, "which demonstrated the ingenuity of Danish designers and manufacturers to experiment with comfortable, convenient forms of seating. Several folding stools have become famous, as the genre lends itself to a vast array of spaces and settings."

The one we'll look at today is the JG Folding Stool, created in 1970 by Danish furniture designer Jørgen Gammelgaard. Originally trained as a cabinetmaker, Gammelgaard came of age a bit later than Hans Wegner and Arne Jacobsen, but still left his mark.

"The JG Folding Stool is one of Jørgen Gammelgaard's most recognised pieces. Appreciated for its unique visual expression, cleverly conceived folding mechanism, high quality craftsmanship and multi-functional approach."

"Intrinsic to the JG Folding Stool is the simplicity and economy of materials. Every line has a purpose and every detail is essential. It's a masterpiece in engineering and a practical design that's appealing from any angle – even folded flat."

"Launched in 1970, the JG Folding Stool earned designer Jørgen Gammelgaard the prestigious Danish Furniture Prize the following year. Since then, the JG Folding Stool has achieved iconic status. The sleek, stainless steel legs expand to create a frame comprised of diagonal lines supporting a simple seat in Aniline leather or canvas. When in a folding position, all the elements easily collapse together."

"As a design typology, folding stools are part of a Danish design tradition spearheaded by Kaare Klint, an influential architect, furniture designer and professor at the Royal Danish Academy of Fine Arts in Copenhagen. Kaare Klint inspired designers, such as Jørgen Gammelgaard and Børge Mogensen, to take an analytical approach to material properties and proportions so as to adapt simple, functionalist designs to modern-day needs."

The JG Folding Stool is still in production today, by Scandinavian furniture brand Fredericia. The legs are stainless steel and both canvas and leather are offered.