As of 2014, the electric chair is not an optional form of execution in Alabama, Florida, South Carolina, and Virginia.
Some systems include:Center seats where a solid material forms the chair seatSolid wood, may or may not be shaped to human contoursWood slats, often seen on outdoor chairsPadded leather, generally a flat wood base covered in padding and contained in soft leatherStuffed fabric, similar to padded leatherMetal seats of solid or open designMolded plasticStone, often marbleOpen center seats where a soft material is attached to the tops of chair legs or between stretchers to form the seatWicker, woven to provide a surface with give to itLeather, may be tooled with a designFabric, simple covering without supportTape, wide fabric tape woven into seat, seen in lawn chairs and some old chairsCaning,Rush, wrapped from rush, heavy paper, strong grasses, or hand twisted while wrapped with cattails to form the seat, usually in a pattern of four trapezoids meeting in the center, and on rare occasions, in elaborate patternsReed,RawhideSplint, ash, oak or hickory strips are wovenMetal, Metal mesh or wire woven to form seat== Standards and specifications ==Design considerations for chairs have been codified into standards
 In general, if the occupant is supposed to sit for a long time, weight needs to be taken off the seat area and thus "easy" chairs intended for long periods of sitting are generally at least slightly reclined

