best mattress to purchase in trichy growell beds and furnitures trichy a cooling tech mattress with a 10-inch HR foam and grid layer typically combines innovative cooling technology with high-resilience foam for a comfortable and temperature-regulated sleep experience.he mattress contains a layer of high-resilience (HR) foam. HR foam is known for its durability, responsiveness, and ability to provide consistent support. It offers a balance of comfort and support, contouring to the body's curves while ensuring proper spinal alignment.