Comfort Comp Saddle Wedge CushionsControls forward leaning by adding a slight anterior height; 2 layers of premium high resiliency foam provide increased comfort and help decrease the probability of pressures sores Leg abductors promote proper leg alignment and reduce hip rotation and pelvic obliquity Waterfall front reduces pressure behind the knees and thighs and coccyx cutout unloads bony prominences; large radius bottom provides versatile surface for sling or flat seated