This British Standard specifies requirements for the selection, placement and fixation of flexible postural support devices within seating devices and systems, and to chairs, including wheelchairs and bathroom equipment. Seating devices can be involved in one or more situations, including static seating, wheelchair seating, shower chairs, etc. The devices enable the seated person (the occupant) to be positioned to maximize their functional activities and to do so in a safe environment. These requirements have a balance of maintenance of posture and of safety.

This British Standard covers flexible positioning supports (padded or otherwise) used for postural positioning and/or safety. It does not cover belts and harnesses used in transportation for restraint, nor postural support devices made from rigid materials such as metal, wood or hard plastics, nor postural support devices designed solely for use in sports‑related seating.