The first shop to open as part of On’s new California expansion plan is a 2,800 square-foot store at 2061 Chestnut Street in San Francisco. Inside On’s Chestnut Street store in San Francisco. Inside On’s Chestnut Street store in San Francisco. Inside On’s Chestnut Street store in San Francisco. The four new California store openings also come at the same time as the company’s plans to expand into Brazil.