Large Rover Seat B
A portable seat that can accommodate up to 3 crew members.
Overview
Large Rover Seat B is a seat attachment for the Large Rover that gives a second astronaut a place to ride the vehicle. It is used to expand rover transport capacity and is commonly paired with other rover modules and attachments for cooperative travel and hauling across the surface of a planet.
Official description
A portable seat that can accommodate up to 3 crew members.