buy double bed mattress online growell beds and furnitures trichy A spring and coir mattress is a type of mattress that combines the support of coil springs with the comfort and resilience of coir (coconut fiber). This combination creates a mattress that offers both firm support and natural breathability.The mattress features a layer of coir, which is derived from coconut husks. Coir provides a firm and supportive base for the mattress. It helps to distribute body weight evenly and maintains proper spinal alignment during sleep. Coir also has natural breathability, allowing for good airflow and temperature regulation.