Plopp Stool by Oskar Zieta

Polish designer Oskar Zieta has produced a new metal stool, called Plopp, for Danish furniture maker Hay. The stool is constructed by wielding two pieces of metal together and then filling out the shape by inserting a pressurized fluid. The result is a stool that follows the forms of inflatable furniture in a light and cheaply mass produced design, which (as you might guess) is sturdier than the typical plastic blow up. (via Dezeen).