This mattress topper will not only prolong the life of your mattress and provide extra comfort, thanks to the cleverly designed Body Sensor™ technology within, it will also help to regulate your body temperature throughout the night. Working with your body, it will keep you warm when it\'s cool and cool when it\'s warm resulting in a less interrupted night\'s sleep. It also has practical elasticated straps so it can easily fit all depths of mattresses and stay securely in place while you sleep.