Why Coil Design Matters
When shopping for a mattress, many people assume that more coils equal better support. At first glance, it makes sense — more springs should mean more strength, right? But the truth is, mattress technology has evolved far beyond simple coil counts.
What truly determines whether you’ll get a comfortable, healthy night’s sleep is how each coil reacts to your body weight, shape, and movement. That’s why Sealy doesn’t just sell mattresses — it researches, collaborates with spinal experts, and tests rigorously before releasing every design.
The result? A mattress engineered not just to support you while lying still, but to adapt dynamically to your body’s needs across all sleeping positions.
What Is A Pocket Spring Mattress?
The pocket spring mattress is one of the most common types on the market today. Each spring is wrapped in its own fabric pocket, which allows them to move independently. This design is often marketed as reducing motion transfer or preventing partner disturbance.
However, this is a big misconception. As demonstrated in our test video, pocket springs provide poor support — they don’t offer the deep-down stability your body needs. Instead of pushing back against weight, the springs simply collapse, which means your spine is not properly supported. Over time, this can result in discomfort, poor posture, and even back problems.
To put it to the test, we conducted experiments at Sealy Research & Development Centre. The testsreveal major shortcomings of the pocket spring when it comes to back and spinal support:
- Poor deep-down support: Instead of providing firm push-back, pocket springs collapse under pressure, showing that they cannot deliver the stability needed for proper spinal alignment.
- Lack of stability: The springs sway and shift rather than holding steady, making the surface feel unstable and inconsistent during sleep.
- Uneven support across the body: Certain areas sink more than others, leaving key pressure zones like the hips and lower back without the lift required for natural alignment and healthy lumbar support.
From the tests, we can see that the assumption that “more springs equal better support” doesn’t hold true — especially when it comes to maintaining proper spinal alignment and lumbar support. This means that even if they feel comfortable at first, over time, they may not provide the right balance of support for truly restorative sleep.
The Sealy AlignSupport® Coil: Engineered for True Support
Sealy’s AlignSupport® coil system was designed with one purpose: to deliver consistent, scientifically engineered support. Unlike generic pocket springs, every AlignSupport® coil has been carefully researched, tested, and engineered in collaboration with spinal experts to ensure proper alignment throughout the night.
What sets it apart is the precision of its design. Even the turns, spacing, and gaps between each spring are scientifically designed to achieve optimal performance. This means the mattress isn’t only backed by science, it actively works to keep your spine in its natural curve while you sleep.
- Patented support technology: This is crucial because our bodies are not flat or evenly weighted. The shoulders and hips carry more weight and need stronger support. The AlignSupport® coil senses these differences and responds accordingly; it yields to lighter pressure and pushes back against heavier loads. This keeps your spine naturally aligned while you sleep.
- Contours to every body part: Shoulders, hips, and back are individually supported, ensuring that no area of the body is left without proper lift.
- Healthy alignment in all sleeping positions: Whether you sleep on your back, side, or stomach, the spring continuously adjusts to provide balanced support.
Our tests confirm that AlignSupport® coils actively preserve posture, reduce strain, and contribute to deeper, more restorative sleep. This adaptability also helps improve overall comfort, making it easier to breathe and even easing snoring by reducing stress on the airways.
Titanium Alloy: Lightweight Yet Durable
Every Sealy coil is crafted from titanium alloy, a material chosen for its unique balance of lightness and strength. This means:
- Easier to move and handle: Unlike traditional foam mattresses or bulky spring beds, Sealy Posturepedic Elevate mattresses feel surprisingly light when lifted, making it easier to set up, rotate, or move between rooms.
- Built to last: Titanium resists wear, sagging, and fatigue, allowing the mattress to maintain its shape and performance year after year. You don’t just buy comfort for today, you invest in durability for the long run.
- Peace of mind, guaranteed: Every Sealy Posturepedic Elevate mattress is backed by a 10-year Guarantee, so you can rest easy knowing your sleep investment is protected.
When you first lift a Sealy mattress, the difference is unmistakable. It feels lighter in your hands, yet stronger and more resilient under your body, proof of the thoughtful engineering that goes into every design.
More Than Coils: A Complete Sleep System
Sealy understands that the springs alone don’t define great sleep. That’s why every Sealy Posturepedic Elevate mattress integrates a full sleep system:
- ComfortCore® Premium: The mattress centre features an extra gel-infused viscoelastic layer that targets the lower back. This added support relieves pressure, enhances conformance, and provides superior lumbar comfort where it’s needed most.
- UniCased® XT: Some brands only reinforce the four corners of the mattress, which can make you feel like you’re “dropping” off the side when lying or sitting near the edge. Sealy’s edge support is fully wrapped on all four walls, giving you a stable, durable surface and consistent support right to the very edge of the mattress.
- SmarTex® & Ice-Touch™: Advanced cooling fabrics that wick away heat and moisture while giving a refreshing cool-to-the-touch feel, helping you maintain an ideal sleeping temperature.
Designed for healthy sleep, these innovations work with the AlignSupport® coil to deliver unmatched support, durability and all-night comfort.
Side-by-Side Comparison Summarised
| Feature | Pocket Spring | Sealy AlignSupport® Coil |
| Response to Weight | Lacks deep-down support. The springs tend to collapse under pressure, offering limited stability and inconsistent support across the body. | Senses your weight and responds with deep-down support, adjusting to both light and heavy pressure. |
| Support for Body Shape | Provides basic support but may not adapt evenly to different body zones. | Engineered to recognize that hips and shoulders carry more weight, responding accordingly to maintain natural spinal alignment. |
| Spinal Alignment | Can feel comfortable at first, though alignment might fall out depending on posture and body shape. | Keeps the spine in its natural curve all night for healthier posture. |
| Adaptability | Limited, might not suit every sleeping position. | Continuously adapts whether you sleep on your back, side, or stomach. |
| Technology | Uses a traditional pocket spring design. | Patented sense and respond system, researched and tested at Sealy’s Research & Development centre. |
Real Results, Real Satisfaction
- 93% of Sealy customers are extremely satisfied with their mattress
- 70% of Sealy customers would buy our brand again
- 90% of people sleeping on a Sealy Posturepedic mattress wake up feeling refreshed and well rested.
Read what industry leaders have to say about their experience sleeping on a Sealy mattress.
*Sealy Global Sleep Census conducted by Quantum Market Research (QMR) through an independent research questionnaire of 20,000 participants across Australia, New Zealand, United Kingdom, China, Hong Kong, Singapore, Malaysia, South Korea and Taiwan.
Sealy offers the AlignSupport® coil, a design that is both patented and perfected through decades of research and innovation. This heritage in sleep science means you’re not just buying a mattress — you’re investing in a tradition of quality and trust.
Wake Up to the Sealy Difference
With the patented AlignSupport® coil, Sealy Posturepedic Elevate has combined decades of research and innovation into one system designed for lasting comfort and healthy alignment. Choosing Sealy means more than just purchasing a mattress. It’s a choice to invest in your wellbeing, enjoy the confidence of proven technology, and wake up refreshed every morning.
You’ve read the science, now it’s time to feel it for yourself. Visit your nearest Sealy Sleep Boutique to experience the difference. From the first moment you lie down, you’ll discover true comfort, backed by technology that’s been tested and trusted by generations. Don’t settle for less when it comes to your health and sleep; you deserve the best.
