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Sealy Avery Firm Mattress
Prefer a firmer feel? The Sealy Avery Firm mattress is expertly designed to deliver deep-down, consistent support — perfect for those who like their mattress on the sturdier side. At the heart of the mattress is Sealy’s patented AlignSupport® spring system. This unique, two-stage coil design senses your body as you rest, offering immediate pressure relief and targeted support where you need it most. The springs are twice-tempered for lasting durability, giving you peace of mind for years. UniCased® edge support reinforces the sides of the mattress, preventing any rolling or dipping and increasing the overall usable sleep surface. Underneath, BasePlank™ technology provides a stable, breathable foundation that strengthens the entire structure. The mattress also features ComfortCore® zoned support in the centre third, designed to relieve pressure on your hips and lower back. A gel-infused foam layer enhances airflow and temperature control, while the final layer of extra firm foam ensures a truly supportive feel from top to bottom. Finished in a soft-touch, Cashmere-infused fabric, the Avery Firm doesn’t just feel great — it’s also made to stay fresh and hygienic. SmarTex® fabric technology wicks away heat, while ProShield® tackles allergens and is endorsed by Allergy UK. Proudly handmade in Britain and backed by a 7-year guarantee, the Avery Firm mattress brings together long-lasting comfort, support, and sleep-enhancing technology — all in one exceptional package.
Product details
- Single: H27cm x W90cm x D190cm
- Double: H27cm x D135cm x D190cm
- King: H27cm x D150cm x D200cm
- Super King: H27cm x D180cm x D200cm
- No turn firm mattress
- Quilted top
- Comfort filling including a SmarTex fabric layer, Sealy Extra Firm Foam and the Sealy Foam ComfortCore
- An AlignSupport Coil support system, UniCased and BasePlank for structure and stability
- 7 year guarantee
Product specifications
Product Sku -averyfirmmattress
Product protection
For a single upfront fee, you can make sure that your new upholstery is safeguarded from common accidents in your home.
Delivery Information
Premium Delivery - £99
Applied to all medium and large furniture items
Includes unwrapping, assembling (except for flat-packed pieces and garden furniture), placing your furniture in the location specified by you, as well as removing and recycling the packaging.
Standard Delivery - £49
Our standard delivery service is for our medium-sized furniture & Garden products.
Please note any product using this delivery service will be delivered boxed and not assembled by our team including our garden furniture.
The estimated delivery lead time is displayed next to each furniture product. However, you will be contacted in advance of your delivery by a member of our delivery team so that you can select the next available date that is most convenient for you.
Courier Delivery - £6.95 or FREE over £60
Applied to all home store and smaller items
£6.95 per order and FREE when you spend £60 or over
Please note any product using this delivery service will be delivered boxed and may require some assembly by you.
The estimated delivery lead time is displayed next to each product.
Payment options
We've made it easy for you to pay the way that suits you best. At checkout, you'll automatically be offered the payment methods available to you depending on what you are buying.
Pay in full
If you'd like to pay in full, you'll have several payment methods available. You can use Google Pay, Apple Pay, or credit or debit cards.
Buy now, pay later with Klarna
Make your purchase today with Klarna and enjoy the flexibility of two payment options: pay in 30 days or pay in 3. Both options have no interest or fees—provided you pay on time.
Pay a deposit and apply for interest-free credit
You'll also have the option to pay a deposit and apply for interest-free credit when spending a minimum of £500. Our simple checkout process includes an easy-to-use, interest-free credit calculator. Here’s how it works:
1. Choose Your Deposit: Use the first slider to select your deposit amount, with a minimum of 20%. As you adjust the deposit, your monthly payment will update automatically.
2. Select Your Term: Use the second slider to choose your 0% finance term, up to 36 months. Your monthly payment will adjust accordingly.
Once you are satisfied with your deposit and term, you’ll know your exact monthly payment. Simply place your order, complete your application with our finance partner, and pay your deposit.
Explore the range
Discover the AVERY FIRM range
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