The Beautyrest Castlerock mattress combines advanced support and cooling features for an exceptional sleep experience. In the King size, it features 1336 coils for optimal support and motion isolation. The antimicrobial fibre ensures a fresher sleep surface, while the cooling quilt keeps you comfortable all night long. With the added benefits of latex and GelPlus Memory Foam, this medium-firm mattress delivers the perfect balance of pressure relief and durability for a restful, rejuvenating sleep.