Traditional mattresses typically are made using bonnel springs, and come in a variety of comfort and support options. Bonnel springs represent the most economical and longest running coil type used in mattresses.
Bonnel springs units are formed with hour-glass shaped coils. The middle of the spring compresses with soft pressure, while the rest of the spring provides a deep support. These hour-glass shaped coils are connected to each other with helical wire throughout the mattress, giving the mattress a strong spring structure for a firm and deep support.