Medium Size: 660 X 100 X 12 mm [L *W* H] mm in which L = Length; W= Width; H= Height in milimeters. 
Support patient's spine by aligning it on Wilson Frame and WFP provide extreme elastomeric cushioning  with added protection from shear and pressure. WFP is provide alone and not with Wilson Frame.
Pre-fixed on frame with hoop and loop attachment used frequently in neurological and orthopaedic prolonged surgical procedures. 
It is provided as 01 pair per pack (without any Wilson Frame Device).