Medline EquaGel Adjustable Cushion Features The Medline EquaGel adjustable cushion is virtually maintenance free with no pump to maintain, repair or replace. Redistributes pressure with patented dual-layer structure andMicro-Immersion TM technology to cradle boney areas. Reduces heat and moisture with cooling gel and an open-cell design. Minimizes shear and friction with the easy-to-clean all-way stretch cover. Precision contour for stability and coccyx relief. Includes 2 gel inserts for customized therapy. Specifications Cover Type High Stretch Easy Clean, Stretch Material Gel Depth Inches 2.500 IN Dimension Height Relative 2.5 Length 16, 18 LATEX FREE Yes Length Inches 16.000 IN, 18.000 IN, 20.000 IN Pressure Redistribution Level Advanced PRODUCT TYPE Seat Warranty 18 month Waterproof Yes Weight Capacity 300 LB, 350 LB, 500 LB Width Inches 16.000 IN, 18.000 IN, 20.000 IN 1 Each / Each