Suitable for armchairs wheelchairs and seats on public transport this oval shaped doughnut cushion provides a more secure and stable sitting position than ordinary circular pads supporting right across your bottom and hips invaluable for anybody with spinal or lower back problems or piles the cut out section eliminates painful pressure on the coccyxmade of premium high density memory foammoulds to the shape of your bodyremovable polyester covermeasures 19 x 14 x 2machine washable