Bio fit Cushion 18X16 (MSRP not on site) is designed for protect skin and maximize mobility, activity and function. Supports up to 300lbs / 136kg. Key features include soft density top layer for comfort and immersion, Blue Visco Gel Foam reduces heat buildup, medium Density Viso Foam provides improved support, positioning and immersion and firm HR Moulded Layer for support, stability and durability with SIT Technology.