the sleep company mattress shop near me in thennur growell beds and furnitures trichy A pillow top is an extra layer of padding sewn onto the top surface of the mattress, providing a plush and cushioned feel. It enhances the comfort of the mattress, offering a soft sleeping surface that can relieve pressure points and promote a more restful sleep. Bonnell springs are a traditional type of innerspring coil system. These hourglass-shaped coils are interconnected, providing sturdy support and durability. Bonnell spring mattresses are known for their firmness and responsiveness, making them suitable for those who prefer a more traditional feel with a bit of bounce.