mattress outlet store in trichy growell beds and furnitures trichy An Adapt Adjustable Firmness mattress featuring 5-inch HR (High Resilience) and PU (Polyurethane) foam is designed to offer customizable firmness levels for personalized comfort and support. The Adapt Adjustable Firmness mattress allows users to customize the firmness level according to their preferences. This feature is typically achieved by incorporating multiple layers of foam with varying densities or incorporating a mechanism to adjust the firmness.