Sealy has been designing mattresses for over 130 years and is trusted in more than 60 countries. At Land of Beds, we stock the full Sealy range across all standard UK sizes, including their Essentials, Performance, and premium Posturepedic collections. Every Sealy mattress in our range includes a 100-night sleep trial, so you have time to be sure it is right for you. Standard models carry a 5-year guarantee, with 7 years on Posturepedic. Free mainland UK delivery is included on orders over £100, with finance available on eligible orders.
Browse the full Sealy range below, or use the links to go straight to your preferred size or collection. Our team has been Sealy-trained and is available seven days a week for a personal recommendation.
Sealy's range is broader than it first appears. Beneath the headline name, there are three distinct collections -- Essentials, Performance, and Posturepedic -- each built around different spring systems, support technologies, and comfort fillings. The Posturepedic range in particular deserves more than a glance if posture and spinal support matter to you. It uses a proprietary AlignSupport spring system developed with orthopaedic input, with targeted support zones designed around how the body actually loads a mattress during sleep. Whether you want a straightforward everyday mattress or something more sophisticated, understanding which collection suits your sleep style will help you land on the right choice. Our team is Sealy-trained and happy to talk you through the differences. At Land of Beds, we have stocked Sealy for years and our advice is based on real product knowledge, not a price list.
Three decisions shape which Sealy mattress is right for you. Get these right and the rest follows.
| Factor | Why It Matters | What to Check |
|---|---|---|
| Collection | Each Sealy collection uses a different spring and support system. Essentials offers firm, reliable everyday support. Performance uses pocket springs for better body contouring and motion isolation. Posturepedic uses a proprietary spring system designed specifically for spinal alignment. | If posture, back support, or orthopaedic comfort is a priority, start with the Posturepedic range. For a solid pocket spring mattress at a range of price points, the Performance collection is the right starting point. |
| Comfort filling | Sealy use memory foam, gel foam, latex, and natural fibre comfort layers depending on the model. Each behaves differently in terms of feel, temperature, and responsiveness. | Memory foam for body-contouring pressure relief; gel foam for warmth regulation; latex for a responsive, naturally breathable feel; natural fibre for a traditional, breathable surface |
| Tension | Sealy mattresses range from soft medium through to extra firm. The right tension depends on your sleep position and body weight. | Side sleepers: soft medium to medium. Back sleepers: medium to medium firm. Front sleepers and heavier sleepers: firm to extra firm. |
Not sure which collection or tension is right for you? Call us on 01928 242829 or use the live chat. Our Sealy-trained team will ask the right questions and point you in the right direction.
Sealy mattresses are available in standard UK sizes. Your mattress must match your bed frame or base exactly.
| Size | Mattress Dimensions | Best For |
|---|---|---|
| Single (3ft) | 90 x 190cm | Solo adults, children, guest rooms |
| Small Double (4ft) | 120 x 190cm | Solo sleepers wanting more space |
| Double (4ft 6) | 135 x 190cm | Couples (snug), guest rooms, smaller bedrooms |
| King Size (5ft) | 150 x 200cm | Couples wanting more width and length |
| Super King (6ft) | 180 x 200cm | Maximum space, larger master bedrooms |
See our UK Bed Sizes Guide for room-by-room measuring advice.
Sealy organises its range into three collections, each built around a different level of technology and support.
| Collection | Construction | What to Know |
|---|---|---|
| Essentials | Open spring (Bonnell coil) or foam construction | Firm, reliable everyday support at an accessible price. Straightforward construction with no separate pocketed springs. Available in firm and extra firm tensions. 5-year guarantee. Best for guest rooms, children's rooms, or buyers wanting dependable support without complexity. |
| Performance | Pocket spring construction with a choice of comfort fillings including memory foam, gel foam, latex, and natural fibre | Individual pocket springs provide responsive body contouring and reduce motion transfer between partners. Available across a range of tensions from soft medium to firm. 5-year guarantee, 100-night trial. Best for main bedrooms, couples, and those wanting better body contouring than an open spring can offer. |
| Posturepedic | Proprietary AlignSupport spring system developed with orthopaedic guidance, with zoned support layers targeting hips and shoulders | Sealy's premium collection. The AlignSupport spring system adapts to body weight and sleep position, providing targeted support at the spine and pressure relief at key contact points. Available in soft, medium, and extra firm. 7-year guarantee, 100-night trial. Best for those with back or joint concerns, those who want the most advanced support in the Sealy range, and long-term sleep investment. |
For a deeper look at the Posturepedic range, read our Sealy Posturepedic Buying Guide.
Choose the Sealy Essentials collection if:
Choose the Sealy Performance collection if:
Choose the Sealy Posturepedic collection if:
In our experience, customers who come in specifically for Sealy usually have one of two priorities: they want the Posturepedic system for back support, or they want a solid mid-range pocket spring mattress with a comfort filling that suits their sleep style. The Performance collection covers the second group well across a sensible price range.
Understanding what goes into a Sealy mattress helps you choose the right one.
| Material / Layer | Performance and Maintenance | Best For |
|---|---|---|
| AlignSupport Springs (Posturepedic) | Proprietary spring system designed with orthopaedic guidance. Provides zoned support adapting to body weight and sleep position, with additional reinforcement at the lumbar area. Cannot be cleaned separately. | Those with back pain or postural concerns; customers wanting the most targeted spring support in the Sealy range |
| Pocket Springs (Performance) | Individual springs encased in fabric pockets. Move independently to contour to the body and reduce motion transfer. Cannot be cleaned separately. | Couples; those wanting responsive body contouring; an upgrade from open spring construction |
| Memory Foam | Reacts to body heat and pressure for close contouring and pressure relief. Wipe-down only. | Side sleepers; those with pressure point discomfort at hip or shoulder |
| Gel Foam | Gel-infused foam providing pressure relief with improved temperature regulation compared to standard memory foam. Wipe-down only. | Warm sleepers wanting foam comfort without excessive heat retention |
| Latex | Naturally responsive and hypoallergenic. Springs back quickly rather than moulding slowly. Wipe-down only. | Allergy sufferers; those wanting a more responsive, naturally breathable comfort layer |
| Natural Fibre | Breathable comfort filling providing a traditional feel and natural temperature regulation. Check individual listing for care instructions. | Customers wanting a breathable, naturally temperature-regulating sleep surface |
See our Mattress Buying Guide for more on matching construction to sleep style.
| Budget | What You Get | Best For |
|---|---|---|
| Under £500 | Essentials and entry-level Performance collection mattresses. Firm everyday support or accessible pocket spring options. 5-year guarantee, 100-night trial. | Guest rooms, children's rooms, buyers wanting reliable Sealy quality at an accessible price |
| £500 to £799 | Mid-range Performance collection with pocket springs and a choice of memory foam, gel foam, or latex comfort layers. 5-year guarantee, 100-night trial. Where most main bedroom Sealy buyers land. | Main bedroom, couples, those wanting better comfort filling choices |
| £800 and above | Posturepedic collection with AlignSupport springs and advanced zoned support. 7-year guarantee, 100-night trial. Sealy's most advanced construction. | Back pain sufferers, master bedrooms, long-term sleep investment |
Looking for a quality Sealy mattress at a lower price? The range starts from under £400. Browse the full range and use the price filter to find what fits your budget.
Our Price Promise Guarantee means you will not pay more than you should. Finance is available on eligible orders -- see our finance page for details on available terms.
| Item | Typically Included? |
|---|---|
| Mattress | Yes - always |
| 100-night sleep trial | Yes - included on all Sealy mattresses stocked at Land of Beds |
| Guarantee | 5 years on Essentials and Performance; 7 years on Posturepedic |
| Old mattress removal and recycling | Available as an add-on for £45, added at checkout. Not available for roll-up mattresses. See our removal and recycling page for full details. |
| Bed frame or base | No - sold separately |
Always check the individual product listing for full details on what is included before purchasing.
| What We Offer | Why It Matters to You |
|---|---|
| 50+ years of expertise | We know sleep products, not just spec sheets. Our advice is based on experience. |
| Sealy-trained team | Our advisors are trained directly by Sealy to give you accurate, product-specific guidance |
| Full Sealy range in stock | Every collection and size in one place |
| Free mainland UK delivery | No delivery charges on orders over £100 |
| Price Promise Guarantee | We will match any like-for-like price you find elsewhere |
| Finance available on eligible orders | Spread the cost across eligible terms -- see our finance page for details |
| Family-run, independent retailer | We recommend what is right for you, not what is easiest for us |
| 9,000+ verified Trustpilot reviews | Real feedback from real customers across thousands of orders |
Not sure which Sealy collection or tension is right for you? Our Sealy-trained team talks through this kind of decision every day. Whether you need to understand the difference between the Performance and Posturepedic ranges, or simply want to confirm the right tension for your sleep position, we are happy to help. Call us, chat online, or visit our showrooms in Cheshire and Greater Manchester. We are open seven days a week.
| How to Reach Us | What to Expect |
|---|---|
| Live chat | Fast responses for quick questions. Available during opening hours. |
| Phone | Speak directly with a Sealy-trained mattress expert. Best for detailed advice on collection and tension. |
| In-store (Cheshire / Greater Manchester) | Try Sealy mattresses in person before you buy. |
| Help Centre | Buying guides, size guides, and FAQs available 24/7. |
| Question | Answer |
|---|---|
| What Sealy mattresses does Land of Beds stock? | We stock the full Sealy range across all three collections -- Essentials, Performance, and Posturepedic -- in all standard UK sizes where available. We also stock Sealy hotel mattresses. Use the links at the top of this page to filter by size or collection. |
| What is Sealy Posturepedic? | Posturepedic is Sealy's premium range, built around their proprietary AlignSupport spring system. Developed with orthopaedic guidance, the system provides zoned support that adapts to body weight and sleep position, with targeted reinforcement at the lumbar area and pressure relief at the hips and shoulders. It carries a 7-year guarantee and is the right starting point for anyone with back or joint concerns. For more detail, read our Sealy Posturepedic Buying Guide. |
| What is the difference between the Performance and Posturepedic collections? | The Performance collection uses standard pocket springs with a choice of comfort fillings. It is a solid mid-range pocket spring mattress at a range of price points. The Posturepedic collection uses a proprietary AlignSupport spring system with zoned support designed for spinal alignment -- it is a fundamentally different construction, not simply a higher spring count. If posture and back support are your main reasons for changing mattress, Posturepedic is the more relevant range. |
| Do all Sealy mattresses come with a trial period? | Yes. Every Sealy mattress stocked at Land of Beds includes a 100-night sleep trial, giving you time to assess the mattress at home before committing. |
| What guarantee do Sealy mattresses carry? | Essentials and Performance collection mattresses carry a 5-year guarantee. Posturepedic mattresses carry a 7-year guarantee. All guarantees cover manufacturing defects and structural issues under normal use. Always check the individual listing for full guarantee terms. |
| Which Sealy mattress is best for back pain? | The Posturepedic range is specifically designed with orthopaedic guidance for spinal alignment and targeted support at the hips and shoulders. For most customers with back pain, it is the right starting point within the Sealy range. Tension also matters -- back sleepers with back pain generally do best with medium to medium firm; side sleepers with back pain often need medium or soft medium to relieve pressure at the shoulder and hip. Our team can help identify the right combination -- call 01928 242829. |
| Is Sealy good for side sleepers? | Yes. The Performance and Posturepedic collections both offer soft medium and medium tension options that allow the shoulder and hip to compress into the mattress for side sleepers while supporting the spine. The comfort filling also matters -- memory foam or gel foam on top adds pressure relief at those contact points. |
| Can I use a Sealy mattress on my existing base? | Yes, if your base is in good condition and provides even support. A slatted frame should have slats spaced no more than 7cm apart. For heavier or premium Posturepedic models, a firm, even base is particularly important. If you are unsure whether your existing base is suitable, our team can advise -- call 01928 242829. |
| Do Sealy mattresses need turning? | Most Sealy mattresses are single-sided and should not be flipped. We recommend rotating the mattress 180 degrees from head to toe regularly to promote even wear. Check the individual product listing for the manufacturer's specific care guidance. |
| Do you offer free delivery on Sealy mattresses? | Yes. Free mainland UK delivery on orders over £100 -- this covers all Sealy mattresses. Some further out postcodes may incur a surcharge; check at checkout. Lead times are typically around 14 days -- check the individual listing for current availability. |
| Can I buy a Sealy mattress on finance? | Yes. Finance is available on eligible orders. See our finance page for details on available terms and how to apply. |
