This luxurious mattress features a 3-inch chemical-free wool wrap, providing exceptional comfort and support. Ideal for those seeking the finest quality, it offers orthopedic firm support combined with a traditional innerspring structure, making it approximately 9.5 inches thick. Customers appreciate the Royal-Pedic name for its commitment to using top-notch materials and craftsmanship, ensuring a product that not only meets but exceeds expectations. This model is especially recommended for individuals with allergies or sensitivities to synthetic materials, as it contains no chemical flame retardants—the wool itself serves as a natural flame retardant.