The items listed here can assist you to maintain your position (seated or lying) in bed. For example, they may provide back support or prevent you from sliding down the bed when in a seated position.
If you are unable to maintain your position using these items of equipment, or feel at risk of sliding off equipment (e.g. when using a pillow lift), it may be more appropriate to use a variable posture bed.
You're more likely to slip down the bed when in a sitting position if you are not supported under your knees.
Care should always be taken that frequent sliding does not result in pressure sores.