This is a huge 13 inch depth mattress which combines the benefits of a top of the range spring system with a hypo-allergenic cover and superior ventilation. The mattress is based on 3000 pockets springs with the addition of a steel rod providing high levels of support. On top of this are generous layers of padding which together provide a very firm sleeping experience. There is a micro-quilted border along with a deep, superior micro-quilted cover. There are turning handles on the sides and ends of the mattress for easy care and a massive 12 vents for exceptional ventilation which together will ensure the mattress stays fresh and healthy for many years.