A really versatile simple product. - Placed under an existing mattress to give a 5" tilt - Place at the foot of the bed to relieve symptoms of oedema, varicose veins, low back pain and general fatigue - Use at the head of the bed to alleviate hiatus hernia and respiratory difficulties - Washable polyester fleece/velour cover - Size: 46x63x13>2cm (18x25x5>1").