mattress stores near here in chattiram bustand growell beds and furnitures trichy A Bonnell spring and latex foam mattress combines two different materials to create a supportive and comfortable sleeping surface. Bonnell springs are one of the oldest and most common types of innerspring mattress coils. They are hourglass-shaped and interconnected, providing a supportive base for the mattress. Bonnell spring mattresses offer good support and durability, with the springs working together to distribute weight evenly across the mattress surface. This helps to prevent sagging and promote proper spinal alignment during sleep.