High Carbon Steel Wire Bonnell Spring Mattress Coil Unit with 10-Year Warranty and Customized Sizes

Bonnell Springs are made of high carbon steel wires which have excellent performance in tensile strength and hardness.

The Bonnell spring features the classic figure eight spring design that has proven its effectiveness over the last century and a half. The hourglass round shape of the spring delivers superior responsiveness and durability.

Bonnell springs are tied together to form a mat around helical cross wires, connecting each spring coil to the spring unit. The spring unit is completed with four millimeter diameter edge wire and edge wire support clips, providing exceptional edge support that prevents mattress edges from collapsing when sitting on the edge of the bed.

Bonnell spring units are noted for compressing easily at first, then becoming progressively firmer with additional compression. This unique feature provides an optimal balance between softness and firmness, ensuring superior comfort and support.