Sunlounger

A sunlounger (British "sun lounger") is a chair-like device, typically placed in a patio, garden, or swimming pool deck, or used as beach-side outdoor furniture.

[1] They are often constructed from wood, formed plastic, or metal and indoor fabrics.

They have designed adjustable backs for people to lie down, or sit up on, (recline) while relaxing.

[2] Somewhat like a deckchair 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 sleeping in the horizontal position (supine and prone position).

[3] They are popular and widespread across tourist resorts in Europe and also by swimming pools.

Sunloungers on a lawn
Sunloungers from the back