A topper mattress, or simply a topper, is a great option if you want to protect your used mattress from dirt or damage, or if you want to change its firmness level. Just place a topper on your main mattress for a more comfortable night's sleep. A topper mattress filled with T25 foam will help you with that. The foam filling provides a soft sleeping surface. Additionally, the material used for this topper is very flexible, making it easier to sleep at night. The height of the mattress is 4 centimeters, and the firmness level is H2. The advantage of the foam mattress is the ability to wash the cover, which can be removed with the help of a zipper.