bed stores around me in trichy growell beds and furnitures trich A Bonnell spring single mattress is a type of innerspring mattress that utilizes Bonnell coils, one of the most traditional and widely used spring systems in mattress construction Bonnell coils are hourglass-shaped springs connected to each other with a spiral wire, forming a continuous support system across the mattress. These coils provide support and durability to the mattress. Single size mattresses are designed for individual sleepers and are typically narrower than larger sizes like queen or king. They're suitable for children's beds, guest rooms, or individuals who prefer a smaller sleeping space.