The global outbreak of Covid-19 has caused countries all over the world, including Indonesia to take preventive measures, such as social and physical distancing. Implementation of social and physical restrictions on public facilities includes prohibiting people to sit on public chairs that are marked with a cross symbol. However, in reality, some people often ignore this. In addition, existing public chairs do not have features that can support health protocol. Both of these things cause discomfort for most people, hence "Extendable Chair” is designed based on ergonomic aspects as a chair that can be extended and is equipped with several features that support health protocols and user comfort. The authors also designed the company that will produce extendable chairs. In designing a company, it is necessary to study and analyze several aspects, such as marketing aspects, technic and technological aspects, managerial and human resources aspects, and financial aspects to determine the business feasibility of a company. The main target markets for selling extendable chairs include parks, educational institutions, terminals, and shopping centres in DKI Jakarta with a market share of 20%. Based on the analysis that has been done, the company is estimated to earn total revenue of Rp 6,261,225,100.00 in the first year by selling 1621 units of extendable chairs and some of the production waste. With a MARR of 15%, the company has an NPV of Rp 371,871,828.95; IRR of 21%; BEP at 4653 units; B/C ratio of 1.09; and the payback period is 1.997, so it can be concluded that the business is feasible.