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- Saddle chair, uses the same principles in its design as an equestrian saddle; does not have a backrest but is equipped with a chair base on castors and a gas cylinder for adjusting the correct sitting height; the castors enable moving around and reaching out for i.e. tools while sitting
- Savonarola chair, a folding armchair dating from the Italian renaissance. Typically constructed of walnut, It is sometimes called an X-chair. The Savonarola chair was the first important folding armchair created during the Italian gothic renaissance period.
- Sedan chair, an open or enclosed chair attached to twin poles for carrying. Using this form of transport, an occupant can be carried by two or more porters.
- Sgabello, from the Italian Renaissance and made out of walnut, consisting of a thin seat back and an octagonal seat; sometimes considered a stool would often be placed in hallways
- Shaker rocker, one of several forms of rocking chair, including side chairs, made by the Shakers
- Shower chair, a chair which is not damaged by water, sometimes on wheels, and used as a disability aid in a shower
- Side chair, a chair with a seat and back but without armrests; often matched with a dining table or used as an occasional chair
- Sit-stand chair, allows the person to lean against this device and be partially supported
- Spinning chair, commonly used with computers due its ability to move freely
- Slumber chair, an easy chair manufactured by C. F. Streit Mfg. Co. in the first half of the 20th century that has a combination upholstered back and seat portion, the inclination of which is adjustable within a base frame; later versions of this chair had a footstool with a removable top that could reveal a "slipper-compartment"
- Sling chair, a suspended, free-swinging chair hanging from a ceiling
- Stacking chair, designed to stack compactly on top of each other to minimise storage space required.
- Steno chair, a simple office chair, usually without arms, meant for use by secretarial (or a stenographer) staff
- Stool, a chair without back and arm rests
- Sweetheart chair, as used in soda shops, is also known as a "parlor chair" and an "ice cream chair" (from use in ice cream parlors); the wire frame in the center of the back curls in a manner to suggest a heart design but the term "sweetheart chair" also has a more generic usage and refers to any chair with a heart-shaped design in the center of the back
- Swivel chairs, swivel about a vertical axis; commonly used in offices, often on casters
Read more about this topic: List Of Chairs