LRKC Coccyx Orthopedic Memory Foam Seat Cushion - Back, Tailbone, Sciatica Pain Relief & Spinal Alignment High density foam retains its shape Breathable mesh, non-slip top/bottom fabric Incredibly lightweight, portable travel ready design 2 Removable/Washable zippered covers- black and white Provides pain relief to the back, tailbone, sciatic, and prostate while sitting on any flat surface; Perfect for cars, trucks, and airplanes, beds, wheelchairs, office chairs, dining and patio chairs, and stadium seats