The Urtica mattress has a high density, fire resistant core: Safeguard®. The mattress combines fire retardancy (complying the international norm BS 5852, Part 2, Crib 5) with unique comfort properties. Using a breathable polyurethane cover, the right body climate is created by evaporating sweat and conducting body heat. The Urtica is also available in the Delta design, preventing bacteria cross-contamination.