Our mattress is designed with a two-layer full foam system with a top layer of 4cm gel memory foam that is naturally antimicrobial and resistant to allergens, mold, bacteria and dust mite, and 16cm (or 11cm for the whole thickness of 15cm) sturdy support foam to ensure great comfort and more durability. Brand Name: Rattrix. Mattress Thickness: 25cm, Mattress Size: Kingsize (5')