The word 'tent' originates from the Latin 'tendere,' meaning 'to stretch.' This evolved into the Old French 'tente,' and then into Middle English as 'tent,' both meaning 'a pavilion or awning.' The term reflects the fundamental tent design: material stretched over a supporting structure. Its etymology underscores the tent's enduring role as a protective, flexible shelter throughout history.

Most tents have two layers for enhanced protection and ventilation. The inner layer provides a breathable barrier, allowing humidity from breathing and perspiration to escape, reducing condensation. The outer layer, or rainfly, is waterproof, protecting occupants from rain and wind. This dual-layer design aids in maintaining a dry, comfortable interior while ensuring a robust defense against various weather conditions.