Easing stress on your spine, this wedge-shaped Spine Eez leg lifter pillow helps you maintain the "pelvic tilt" position while sleeping, elevating your knees for comfortable support. This wedge leg pillow stays secure through the night, easing pressure from back and legs. The polyurethane foam cushion on this leg pillow features a soft, machine washable sherpa cover. 15 1/4" long x 12 5/8" wide x 8 1/8" high.