The backrest is a padded chair with a user-activated metal mechanism that squeezes the backrest and raises the footrest to fit the lower leg of the user.
Most of the chairs are armchairs, which means that they also contain arms. The upholstered backs and seats make the chair a really comfortable piece of furniture. Lounge chairs or sofas are called "action" or "motion" furniture as they move or change shape. Some sofas are activated with the lever. others are caused by a slight force pushing back on the chair.
The lounge sofa is one of the most expensive sofas. It also gives you more flexibility at this time.