The Shear Comfort Regal Day Chair Overlay is designed for those individuals who spend most of their day seated in an armchair, and who have skin that could be at risk of damage from heat or perspiration build-up, or from shear forces. The Day Chair Overlay is made from Shear Comfort extra density XD1900 sheep's wool with benefits such as shear and friction reduction, microclimate control, and pressure redistribution.