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As the UK swelters in this heatwave, there's no better time to upgrade to a cooling mattress. British sleep brand Simba has cut prices by up to 25% across its latest online sale, with discounts on mattresses, mattress toppers, pillows, and more.
And that's not the only sleeper brand offering discounts this week. Emma Sleep is also offering up to 25% off on its site.
Simba Sleep has built its mattresses with temperature regulation in mind. Its cooling technology is designed to combine breathable materials, open-cell foam, and airflow-enhancing spring layers to encourage heat dissipation and improve circulation. Rather than retaining warmth, the layered construction is intended to promote a cooler, fresher feel — a feature ideal for the summer months.
Most sleep experts also recommend replacing your mattress every five to eight years, as older mattresses can lose support over time and contribute to aches, pains, and disrupted sleep.
Not ready to commit to a brand-new mattress? One of the best mattress toppers in the UK can be an easy way to refresh your current setup and help extend the life of your mattress until you’re ready to make the switch.
Simba offers a 200-night home trial across all of its mattresses, so you'll be able to thoroughly test out its hybrid designs — that blend both pocket-spring and memory foam technology — until the beginning of December and still send the mattress back for a full refund if you're unhappy. Simba is really that confident.
Making things even more affordable, the brand offers interest-free monthly payment plans, so you can divide the cost of these premium hybrid-design mattresses over 3 to 12 months.
You have until 11:59pm June 1, 2026 to shop the deals.
Save £140 on Simba Sleep's most affordable mattress
The hybrid essential is the most affordable out of the line-up, and you can pay in interest-free monthly payment plans for up to 12 months. It's designed to give you quality support without breaking the bank
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Simba Hybrid Essential (Double)
$699
$559.20
The most budget-friendly option in the mattress range is the Hybrid Essential (was £699, now £559.20), which packs Simba Sleep tech into a trimmed-down design.
It offers cooling, medium-firm support, and solid motion isolation — meaning it can absorb and minimise the transfer of movement between parts of the bed. Designed with nine zoned support areas and structured foam, it delivers a "hugged" feel with targeted alignment and cooling performance.
However, with only four layers of foam and micro springs, it's a more modest 20cm deep. Simba Sleep has patented its own Simbatex foam technology that's designed to promote airflow throughout the design — keeping you cool while you sleep in the hot summer months.
It's rated as "medium" support, so it should be good for most sleepers. It could be a better choice for back and side sleepers seeking quality support at an accessible price.
Save £300 on the Hybrid Pro mattress from Simba
The Hybrid Pro model is not only a best seller out of the line-up, but it's also award-winning. Designed to give you support and with maximum cooling technology, it's set to give you an uninterrupted, restful night
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Simba Hybrid Pro (Double)
$1299
$974.25
Designed for sleepers seeking extra cushioning and cooling, the Simba Hybrid Luxe (was £1,799, now £1,349.25) comes with triple spring layers (including micro springs), a wool/bamboo top layer, and structured foam for maximum support. With a breathable cover, this option strikes a luxurious balance of softness and support.
The Simba Ultra (was £2,399, now £1799.25), however, is crafted to be the most luxurious in the lineup with a total of 11 layers, 7,300 springs, and maximum cooling and pressure relief. At 34 cm deep, it’s Simba’s thickest and most supportive mattress yet.
If you're unsure about which mattress might be right for you, the brand offers a 200-night trial for free.
This means that if you're unhappy with the feel of your mattress within the first 200 days of delivery, they'll come and collect it for free and issue a full refund.
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Simba Sleep is a British success story, with its award-winning hybrid mattresses designed and manufactured in the UK from a factory in Derbyshire. Meanwhile, the supportive pocket-springs are made in Leeds from British steel. "We love that Simba can source locally and support one of the great trades remaining in the UK — we are lovingly handmade and homemade," the company says.
Simba uses cool-touch technology on its mattresses to help keep you from overheating during the night
|SIMBA SLEEP
Founded in 2015, Simba started with a single mattress design that combined memory foam, responsive springs, and temperature-regulating layers to create balanced comfort and support. Since then, the brand has expanded its range to include hybrid and premium mattresses, pillows, duvets, and bed frames.