Why the type of springs in a mattress matters
The springs inside a mattress play a crucial role in its overall comfort, support, and durability. Understanding the different types of springs and their functions can help you choose the best mattress for your needs. There are three primary types of springs used in mattresses: Calico Pocket Springs, Micro Coil Springs, and Innersprings (often referred to as Bonnell springs). Each type of spring has its own characteristics, quality, and impact on mattress performance.
Calico Pocket Springs
Calico pocket springs are considered the highest quality springs used in mattresses, and their construction process is a testament to their superior craftsmanship. Each spring is individually wrapped in a breathable cotton pocket, known as calico. This natural material allows the springs to move independently, ensuring that the mattress can contour to your body and provide targeted support where needed.
The construction process of calico pocket springs involves hand-tying the springs together using twine. This traditional method of tying the springs ensures that each one functions independently, preventing the transfer of movement from one side of the mattress to the other.
Because of the meticulous craftsmanship involved in making calico pocket springs, they are the most expensive type of spring on the market. The quality of materials, combined with the detailed construction process, makes these springs an investment in comfort and durability. They offer unparalleled lumbar support and promote a good night’s sleep, making them a top choice for those seeking a luxury mattress.
Micro Coil Springs
Micro coil springs, on the other hand, are much smaller and thinner than traditional pocket springs and are typically used in the comfort layers of a mattress rather than as a primary support system. These springs are designed to add a layer of softness and are often used alongside other materials like fibers. However, they are considered inferior in terms of performance compared to traditional pocket springs.
One of the key issues with micro coil springs is that they take up valuable space in the mattress that could be better used by premium natural fibers. Manufacturers often use micro coil springs because they are cheaper to produce than traditional pocket springs. This cost-saving measure allows them to market mattresses with a high spring count, but it doesn’t necessarily translate to better comfort or support.
At Winstons, we had a range of mattresses that featured micro coil springs. However, after extensive testing and customer feedback, we discontinued the entire range due to their poor performance. We found that these springs wore out quickly, reduced the mattress’s life span, and did not provide the comfort or durability that our customers expected. We also learned firsthand just how inexpensive these springs are to produce, confirming that their inclusion in a mattress is often more about cutting costs than enhancing comfort.
Innersprings (Bonnell Springs)
Innersprings, or Bonnell springs, are one of the most common types of springs found in mattresses, especially in more affordable options. These springs are shaped like an hourglass and are interconnected, meaning that when one spring is compressed, the others around it are affected. This interconnectedness can result in less individualized support compared to pocket springs.
Bonnell springs do not offer the same level of comfort or pressure relief as calico pocket springs. This type of spring is more suited for those looking for an budget mattress but not for those needing precise support based on body type or sleeping position.
Foam Support Bases
Any mattress that uses foam as a support base should be approached with caution. While foam might be marketed as a comfortable, pressure-relieving material, it’s often used as a cost-cutting measure by manufacturers. Foam bases do not offer the same level of support as spring-based mattresses and tend to break down over time, leading to sagging and loss of support.
Foam mattresses also tend to trap body heat, which can make for an uncomfortable night’s sleep, especially for those who naturally sleep hot. The lack of airflow in foam mattresses can also reduce the life span of the mattress, as the materials degrade faster due to trapped heat and moisture.
At Winstons, we decided to make a foam mattress with the highest specifications on the market, just to prove how poorly they perform compared to traditional mattresses. One thing became clear during this process: foam mattresses were significantly cheaper to produce than natural fiber or pocket spring mattresses. Despite the high specs, the foam mattress still couldn’t match the support, comfort, or durability of our pocket spring mattresses.
When choosing a mattress, the type of springs it contains is a critical factor that affects its comfort, support, and durability. Calico pocket springs, with their intricate hand-tied construction, offer the best support and longevity, making them ideal for those seeking a high-quality mattress. In contrast, micro coil springs, despite their prevalence in some mattresses, offer little in terms of lasting support and should generally be avoided. Innersprings, or Bonnell springs lack the individualized comfort of pocket springs.
It’s also important to steer clear of mattresses that use foam as a support base, as these are typically less durable and offer poor long-term support. Always check the mattress firmness scale and consider your body type and sleeping position when selecting the right spring tension. By understanding the differences in spring types and avoiding lower-quality options like micro coil springs, bonnell springs and foam bases, you can find a mattress that will provide a good night’s sleep for years to come.