A pressure relief and redistribution cushion that has pronounced contours for controlling sliding and improving body posture. Raised front prevents forward thrust. Maintains pelvic neutrality to control sliding. Leg troughs promote thigh alignment and postural symmetry. Elevated sides improve lateral stability. A gel pad relieves coccyx pressure and reduces skin temperature. High-density foam increases comfort. Low-Shear II wipe-clean cover reduces skin damaging friction. Safety strap secures cushion to the wheelchair.