Adjustable height & firmness. Firmer style pillow. For sleepers who prefer additional or firmer support. Down-like comfort. Adjustable height & feel Features three interchangeable inner pillows to layer up in the order you prefer. ‘Cool-touch’ technology. Innovative Stratos®’ tech supports fresher sleep.Improved airflow. Open mesh border encourages air circulation. Easy to keep clean. Features a quilted, zip-off, washable cover. Simba Sleep