TWG Tea is a Singaporean tea shop with a branch in Marunouchi, located in the basement of the Shin-Marunouchi Building, which connects directly to Tokyo Station via an underground passage. The shop sells black, oolong and green tea by weight from 50 grams, along with tea bags and cookies. Two staff members help with product explanations and tea selection in the small store, which has wall shelves and a checkout counter. The store is not quiet because many people pass through the underground passage.