The Nautical Preferred range of mattresses by Aireloom, exclusive to And So To Bed consist of 3 main components; Quilted Top, Comfort Layers, Support System. See below for details on each component:. INDIGO. Mattress depth: 38cm approx. Streamline. Outer-tufted-Luxury firm. Patented Aireloom Lift. . FabricQuilted Top. *Ultra Conforming Knit with Tencel *HiLoft FR Fibers *1 12 Plush Quilting Foam *1 12 Plush Quilting Foam *True-stretch Cotton Tricot . Comfort Layers. *3layers plush Talalay Latex *Micro Coils, 19 gauge *1 12 1.8 Luxury Firm Foam . Support System. *7 Support-flex tempered 15 gauge individually wrapped coils *Over 40 hand outer-tufts *Coil Count: 896 king size