Cushions Pharmaouest Kalli Visco Wheelchair Cushion 92-17-17138 The KALLI Visco cushion is anatomically shaped in memory foam in order to adapt to a person's morphology. It ensures increased pelvic stability and good distribution of pressure while providing comfort in the proper sitting position. It successfully provides a natural and comfortable feel. Please select at check-out if you qualify for VAT relief. View