Size options: A range of sizes from 80x180cm to 200x200cm. Support: Features a high quality HR foam core that provides firmness and support that you need to maintain a healthy posture. Comfort: The viscoelastic upper layer provides adaptability and comfort alongside the supportive core - the best of both! Safe materials: OEKO-TEX Standard 100 certified. Mattress: Get a viscoelastic mattress.