Open Coil vs Pocket Spring: Which Is Best?

The main difference is that open coil mattresses contain a series of connected springs while pocket springs have individual springs in fabric pockets.

With such different craftsmanship, you’ll find different advantages to these mattress types, depending on your sleep preferences, body type, and other factors.

So, read along as we look at those pros and cons and see whether open coil or pocket spring is most suitable for your specific sleep style.

What’s an open coil mattress?

Open coil mattresses, also known as traditional or inner springs, are made with a continuous coil of wire shaped into a series of springs. With no separation between the springs, movements on one part of the mattress can be felt across the entire surface.

Open-coil springs are connected, providing a uniform support system across the mattress. They are generally firmer than other spring mattresses, as every spring is connected to another, with the tension of each spring holding up the others.

Despite being marketed as a solution for back pain, open coil mattresses aren’t always the best option. While their firmer surface and comfort grades can provide the flat surface needed for spinal alignment, their lower spring count and traditional design don’t always provide the support needed.

Unlike pocket spring mattresses, which have individual springs encased in their own fabric pockets, open coil mattresses have connected springs. This design makes them generally cheaper and lighter, making them easier to handle and rotate. Despite their simple construction, open coil mattresses can have multiple comfort layers catering to different preferences and needs.

Open coil mattress features

• Firm spring structure: A connected support system where springs work as one unit, providing uniform firmness across the mattress surface.
• Basic construction: A simple design, often with lower spring count, making these mattresses light and easy to rotate.
• Temperature control: The open spring structure allows good airflow throughout the mattress and regulates sleeping temperature.
• Affordable: Traditional manufacturing process and basic materials make these mattresses more budget-friendly.
• Sagging: Without the right care, open coil mattresses can sag inwards towards the end of their lifespan, which can cause discomfort and disturbed sleep.

How do open coil mattresses work?

Open coil mattresses use a series of connected springs all linked by a wire rod edge. These springs are wound into hundreds of coils that work together to distribute body weight across the entire mattress.

The connected spring unit is designed to provide consistent support and comfort, sometimes suitable for back pain and pressure points. This interlinked coil system helps the mattress maintain shape and firmness, providing a stable and supportive sleeping surface.

What’s a pocket spring mattress?

Pocket spring mattresses, also known as pocket-sprung, are designed with individual springs encased in fabric pockets. Unlike open coil, each spring works independently.

Encased in their own fabric pocket, each spring responds solely to directly applied pressure, allowing for independent movement and reduced partner disturbance. This allows the mattress to adapt and conform to the body’s shape and movement, offering personalised support for different body types. It also allows for a higher spring count, as the springs can be shaped and sized independently.

Pocket spring mattress features:

• Higher spring count: Pocket springs have higher spring count than other spring based mattresses. Open coils max out at around 1500 springs whereas pocket springs can go up to 11,000.
• Independent support: Each spring moves independently, providing tailored support to your body shape.
• Better edge support: The structure provides better edge support, prevents sagging and extends usable bed space.
• Premium quality: Pocket spring mattresses are generally considered higher quality than open coil systems and deliver better support and comfort.
• Suitable for different weights: These mattresses can be customized to fit different body weights, ideal for couples or those sharing a bed.

Are they for certain sleep types?

There are two main factors to consider when choosing the right mattress: your sleeping position and the depth of your sleep.

Your sleeping position – whether you sleep on your back, side, or front – directly affects the comfort grade most suitable. We’ll explore this a little below but if matching your mattress to your sleeping position is key, read our guide on the best mattresses for your sleeping position.

Don’t just consider your sleeping position, though. The depth of your sleep – whether you’re a light sleeper who wakes easily or a deep sleeper who sleeps uninterrupted – can also affect mattress choice.

Let’s examine how pocket springs and open coil mattresses accommodate these different sleeping styles. When considering coil vs pocket designs, pocket spring mattresses offer more personalized support due to their individual springs, while open coil mattresses provide uniform support.

Recommended sleep styles for pocket spring

Pocket spring mattresses are well suited to various sleep types due to their unique design. Pocket spring models offer more comfort and support due to their higher spring count and individual spring movement. Here’s how they cater to different sleeping preferences:

• Side sleepers: The independent nature of pocket springs allows for great body contouring and pressure point response. This is often vital for side sleepers who need more give at the shoulders and hips.
• Front sleepers: A medium to firm pocket spring mattress can provide optimal support that prevents too much sinkage around the midsection and encourages a neutral spine position, crucial for this sleeping position. Do remember though that some pocket springs are available in a soft comfort grade. These aren’t suitable for front sleepers as they won’t keep the spine aligned.
• Light sleepers: The individually encased springs in pocket spring mattresses reduce motion transfer remarkably well, ideal for light sleepers who are sensitive to movements during the night.

Recommended sleep styles for open coil

Open coil mattresses have different attributes that may suit certain sleeping styles:

• Back sleepers: Those who sleep on their backs often find open coil mattresses comfortable due to the slightly firmer feel and consistent support across the mattress.
• Front sleepers: Like back sleepers, front sleepers can benefit from the firmness of open coil mattresses. However, the connected coils may not contour to the body as much as pocket springs.
• Deep sleepers: Due to the durable and supportive nature of open coil constructions, deep sleepers may find them sufficient, but they won’t have the same level of contouring as pocket springs.

In the end, while open coil mattresses can be suitable for back and front sleepers and deep sleepers who want firm support, they won’t offer the same level of comfort and motion isolation as pocket spring variations.

When comparing coil and pocket sprung mattresses, pocket sprung options generally offer more comfort and support due to their individual spring design and more advanced craftsmanship.

Pros and cons of pocket spring mattresses

Pocket spring mattresses have gained popularity for their unique features and benefits. Here’s a quick rundown of their pros and cons:

Pros:

• Individual support: Pocket springs are individually wrapped; each spring moves independently and provides support to specific body parts.
• Reduced motion transfer: Since each spring reacts individually, movement from one side of the bed doesn’t disturb the other, ideal for couples.
• Superior durability: Due to the robustness of the individual springs, these mattresses tend to last longer, with guarantees that go up to 7 years.
• Breathability: While open coils are more breathable, the space created by each pocket spring still enhances airflow, keeping the sleep surface cooler than non-spring technology like memory foam.
• Pressure relief: Pocket springs often provide excellent support, keep the spine aligned, and provide targeted support based on awkward pressure points.

Cons:

• Cost: They’re more expensive than traditional spring mattresses due to their advanced design and materials.
• Weight: Pocket springs are heavier and more difficult to move than open coil mattresses.
• Depth variability: Due to their depth, they might not be suitable for all bed frames or sheets.
• Allergy concerns: They can trap dust and allergens if not cleaned regularly.
• Limited flexibility: Full pocket spring mattresses aren’t suitable for adjustable bed frames as their design doesn’t allow for it. However, adjustable mattresses can have a single layer of pocket springs – these are mostly described as combination or mattresses.

Pros and cons of open coil:

Open coil mattresses have their own advantages and disadvantages. Here’s the lowdown:

Pros:

• Affordability: Open coil mattresses are cheaper, making them more accessible to budget-conscious buyers.
• Lightweight: These mattresses are easier to move and handle due to their lighter structure.
• Wide range: Available in various firmness levels, they can cater to a wide variety of sleep preferences.
• Breathability: The open design allows for airflow and keeps the mattress cooler than most other mattress types.
• Orthopaedic support: Some models are designed to provide firm support, suitable for back pain sufferers.

Cons:

• Longevity: These mattresses usually have shorter warranties than pocket springs and other premium mattresses.
• Motion transfer: Partners may feel each other’s movements due to interconnected springs.
• Sagging: When close to the end of their lifespan, and without the right care, they can sag inwards.
• Noise: As above, without regular turning and flipping, they can become noisy with prolonged use.
• Limited pressure relief: They may not offer as much pressure relief as pocket spring and other alternatives like memory foam.

Back pain and support

Open coil mattresses are known for their supportive nature, which can help alleviate back pain. The connected springs in an open coil mattress work together to provide whole surface support, helping to align the spine and reduce joint aches. This makes them a good option for those who want a firm and supportive mattress.

However, note that pocket sprung mattresses generally offer more support and durability especially for those with chronic back pain. The individual movement of pocket springs allows for more body conforming, more support and comfort. To ensure you’re choosing a mattress designed for your needs, check out our orthopaedic mattresses – handpicked by our expert team so you don’t need to do the hard work.

And remember, if you’re suffering from back pain, it’s important you speak to your GP. In the meantime, check out our guide to choosing a mattress to help with back pain.

The verdict: pocket spring or open coil?

When choosing between pocket spring and open coil mattresses, align your choice with your sleep style. You’ll want to consider all your needs, from sleeping position to budget, but at its simplest, here’s what we recommend:

Budget: Open coil mattresses are more affordable due to their traditional design. They offer decent support for less.

Couples or shared sleepers: Pocket springs are the winner here. Each spring moves independently and reduces motion transfer—perfect for those sharing a bed.

Long term investment: Pocket spring is more durable and maintains its shape longer than open coil.

Support needs: If you need orthopaedic support, go for firm pocket springs for pressure point relief. If you require traditional spring due to cost constraints, opt for a higher spring count.

Still not sure what mattress is best for you? Book an appointment at your local store or try out our online SleepMatch mattress finder.