You are currently viewing What the heck is a Bonnel spring? Bed Jargon Explained

What the heck is a Bonnel spring? Bed Jargon Explained

  • Post author:
  • Post category:Articles

At Sleepy Hollow Bed Centre we often discuss the banality and nonsensical way bed manufacturers name their products. Whilst this is almost always done with forethought, the jargon can become confusing and feel like you need to have a weekend work experience placement to understand which mattress is the right one for you.

A mattress is an essential component of our lives, providing us with the much-needed rest and comfort that we require to tackle the challenges of the day. A quality mattress not only enhances our sleep quality but also has a positive impact on our overall health and well-being. But what makes a mattress comfortable and supportive? The answer lies in the materials used in its construction, the fillings and springs.

Let’s dive into the different types of fillings and springs of a mattress and their benefits.


  • Memory Foam: There are 2 types of memory foam to be aware of. At Sleepy Hollow Bed Centre we only use products with Medical Grade Memory Foam. Another, cheaper type of memory foam mattress is used by various Amazon sellers as they can be manufactured for very little although we will never recommend using any memory foam that is not Medical Grade. Memory foam is made of polyurethane foam and is known for its ability to conform to the body’s contours. Memory foam is a popular choice for those who suffer from back or joint pain as it provides excellent support and pressure relief. It is also known for its ability to isolate motion, making it a great choice for couples who have different sleep patterns.
  • Latex Foam: Latex is a natural material that comes from the sap of rubber trees. It is known for its durability and excellent support. Latex mattresses provide excellent pressure relief and are resistant to dust mites and other allergens, making them a great choice for those with allergies.
  • Hybrid: Hybrid mattresses combine the best of both worlds by using both foam and coils in their construction. The foam provides pressure relief, while the coils provide support and durability. Hybrid mattresses are a great choice for those who want the benefits of both foam and coil mattresses.
  • Natural Fillings: From wool, hemp, cotton and felt to horsehair, alpaca hair and many others, natural fibres are fantastic for moisture protection, temperature control and support. Natural fibres tend to be more expensive and so are found in higher-end mattresses like the Harrison Spinks Onyx


  • Open Coil/Bonnel Sprung: If you were born after WW2 and before the millennium, you probably grew up on one of these. A series of coiled springs that are held together with clips or hinges. Traditionally a cheaper way to manufacture mattresses. Open coil mattresses are great value, like the Orchid
  • Coil Spring: Coil spring mattresses are made up of coils that are individually wrapped in fabric or foam. These coils provide excellent support and comfort, making them a popular choice for many people. Innerspring mattresses are also known for their durability, making them a great long-term investment
  • Pocket Spring: Pocketed springs are individually wrapped coils that work independently to provide excellent support and comfort. Pocketed coils are great for couples as they isolate motion, allowing one partner to move without disturbing the other.

Most mattresses use a combination of different fillings and springs.

In conclusion, the filling and springs of a mattress play a crucial role in its comfort and support. It is important to choose a mattress that best suits your needs, whether you suffer from back or joint pain or have allergies. With the right combination of filling and springs, you can ensure that you get a good night’s sleep and wake up feeling refreshed and rejuvenated.

If you have any more questions about beds just nip in and see us on Cottam St Chorley or drop us an email to You can also send us a message through our website or give us a call on

01257 265 793.