<unk>  is any material, such as a mattress, that<unk> s people who are bed-ridden through illness. Research and development of appropriate<unk> s can alleviate some of the complications of immobility, such as bedsores and respiratory problems. The National Pressure Ulcer Advisory Panel's (NPUAP)<unk>  Standards Initiative (S3I) has released the first version of its Terms and Definitions Document. This set of definitions is provided in an attempt to redefine commonly used and confused terms. The terms describe<unk>  features, components, categories, and performance characteristics. The Terms and Definitions Document and an evaluation form can be found at NPUAP`s site
Support surface
Veneer 
Sensory design
Potential space
Explorers of the Body
Bridge 
Alternate care site
Adhesion barrier