A sunlounger, also called a chaise longue (from French for long chair) in the U.S., is an article of patio

Patio

A patio is an outdoor space generally used for dining or recreation that adjoins a residence and is typically paved. It may refer to a roofless inner courtyard of the sort found in Spanish-style dwellings or a paved area between a residence and a garden....

, garden

Garden

A garden is a planned space, usually outdoors, set aside for the display, cultivation, and enjoyment of plants and other forms of nature. The garden can incorporate both natural and man-made materials. The most common form today is known as a residential garden, but the term garden has...

, swimming pool

Swimming pool

A swimming pool, swimming bath, wading pool, or simply a pool, is a container filled with water intended for swimming or water-based recreation. There are many standard sizes; the largest is the Olympic-size swimming pool...

 deck, or beach

Beach

A beach is a geological landform along the shoreline of an ocean, sea, lake or river. It usually consists of loose particles which are often composed of rock, such as sand, gravel, shingle, pebbles or cobblestones...

-side outdoor furniture

Furniture

Furniture is the mass noun for the movable objects intended to support various human activities such as seating and sleeping in beds, to hold objects at a convenient height for work using horizontal surfaces above the ground, or to store things...

.

They often constructed from wood, formed plastic

Plastic

A plastic material is any of a wide range of synthetic or semi-synthetic organic solids used in the manufacture of industrial products. Plastics are typically polymers of high molecular mass, and may contain other substances to improve performance and/or reduce production costs...

, or metal and outdoor fabrics. They are designed adjustable backs for people to lie down, or sit up on, whilst relaxing. Somewhat like a deckchair

Deckchair

A deckchair is a folding chair, usually with a frame of treated wood or artificial material and a fabric or vinyl backrest and seat. It may have an extended seat, meant to be used as a leg rest, whose height may be adjustable...

 and bed-like in nature, the rear surface can be up to allow the user to sit up and read, or it can be reclined to a flat surface to allow snoozing

Sleep

Sleep is a naturally recurring state characterized by reduced or absent consciousness, relatively suspended sensory activity, and inactivity of nearly all voluntary muscles. It is distinguished from quiet wakefulness by a decreased ability to react to stimuli, and is more easily reversible than...

in the horizontal position.