Firmness
Medium Firm
Type
Pocket Spring
Depth (cm)
25
Number of Layers
5
Trial Period (nights)
100
Warranty (years)
10
Price Range
£508 to £704
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
Choose the Anna 1500 if you want traditional pocket sprung comfort with natural touches rather than foam. The blended silk and polyester layer is highly breathable, which means better airflow and less heat and moisture buildup overnight, a genuine plus if you tend to sleep warm. The 1500 pocket springs adapt to movement individually, so couples should feel less disturbance when one of you shifts. It conforms to BS7177: 2008 for fire resistance and carries a 10 year guarantee through Mattress Online, the retailer currently listing it. It isn't cheap at £508 upwards, but you're paying for UK handcrafting and a spring system rather than budget foam.
Key Features & what's inside
- Damask cover. A finely woven damask fabric that's soft to the touch and doesn't retain heat, which means the sleep surface stays cooler than many synthetic covers. It's built for long-lasting performance too.
- Soft White Fibres. Soft synthetic fillings that create a cosy initial feel when you lie down. They're durable and resilient, so they should hold their shape rather than flattening quickly.
- Silk and polyester layer. A blended silk and polyester layer that's highly breathable. This increases airflow through the mattress, reducing heat and moisture buildup, which matters if you're a warm sleeper.
- Dual density polyester fibre pad. Soft and plush on the side facing you for comfort. The denser reverse side supports the spring system beneath, helping the layers work together.
- Pocket Springs. 1500 pocket springs, each encased in its own cloth pocket. Because they move individually, they adapt to your body and reduce the ripple effect when a partner moves.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
This isn't the one if you need a genuinely firm mattress: the brand describes it as medium, so heavier sleepers or those wanting a solid, supportive feel may sink in more than they'd like. It's also a considered spend at £508 upwards, and there's no UK Single or King size listed.
Relyon Anna 1500 Pocket Mattress
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How firm is the Relyon Anna 1500 mattress?
The product page describes it as medium. That suits most back and side sleepers who like a balance of cushioning and support, although if you prefer a firmer surface, or you're heavier and need more pushback, this may feel a little too soft.
Does the Relyon Anna 1500 come with a trial or guarantee?
Mattress Online lists a 100-night comfort trial and a 10 year guarantee. Both are that retailer's own offers rather than Relyon's, and the trial requires you to buy a mattress protector from Mattress Online at the same time. If you buy elsewhere, check that retailer's terms.
How deep is the Relyon Anna 1500 mattress?
The main description lists it at 24.5cm deep, though the dimensions table shows 24cm, with a tolerance of plus or minus 2cm. Either way it's a mid-depth mattress, so standard fitted sheets should work without any trouble.
What sizes does the Relyon Anna 1500 come in?
It's available in UK Small Double, UK Double and UK Super King, priced from £508 to £704 depending on size. There's no UK Single or standard King listed, which is worth checking before you set your heart on it.
Is the Relyon Anna 1500 good for hot sleepers?
It has some helpful features: the damask cover doesn't retain heat, and the blended silk and polyester layer is highly breathable, increasing airflow to reduce heat and moisture buildup. As a sprung mattress with fibre fillings rather than foam, air can circulate more freely too.
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