The Medline EquaGel Balance Cushions, 18X16 Inch, Universal all-gel cushion suitable for any resident, 1-3/4" (4 cm) thick. The revolutionary grid structure is both soft and supportive, and it continually adjusts to your every move. EquaGel Cushions reduce peak pressures by up to 41% compared to our standard foam cushion. All EquaGel cushions redistribute pressure with patented dual-layer structure and Micro-Immersion technology to cradle boney areas; Reduce heat and moisture with cooling gel and an open-cell design; and minimize shear and friction with the easy-to-clean all-way stretch cover. 1 Count