The patient is a 4'10", 86 yr. old female, bed bound, appx. 100 lbs. The system is used on a 3-way adjustable home hospital bed. The bedding is a cotton/poly. blend. The System challenges for us are these: The nylon type mat material is very slippery and slides down the bed when the head of the bed is in the upright position. The lift wedges can slide out of position when the bed is flat. The patient has 6-8 diaper changes daily. With each change a new system mat is needed which becomes very expensive. Perhaps this system is better suited for a larger, heavier, patient requiring less mat changes.