Amazon Prime Day mattress deals 2026: Early sales from £77

The Octasmart Deluxe Memory Foam Mattress in a light blue bedroom. A Prime Day deals badge can be seen in the bottom left foreground. — (Image credit: Future)

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This year's Amazon Prime Day mattress deals have landed and so far it's been a pretty bland sale from the online retail giant. While there are a handful of genuinely good deals, most of the offers in today's Prime Day deals drop are on cheap beds with no cooling clout to help you sleep well in the summer ahead.

To help you spend your money wisely, we've found Amazon Prime Day mattress deals worth buying. Two of these mattresses are made by Simba and Nectar; sleep brands behind some of the best mattresses we've tested.

We'll be updating this page throughout the week with new deals, vetted by our sleep experts as and when they land. Don't forget, you have to be a Prime member to access these cheaper prices. Not a member? No problem – Amazon is offering a free Amazon Prime 30-day trial all of this week.

At a glance: Today's best Prime Day mattress deals

View all Prime Day mattress deals at Amazon
Simba Simbatex Cool Mattress: from £261 at Amazon
Zinus Green Tea Memory Foam: from £73 at Amazon
Nectar Memory Foam mattress: from £319 at Amazon
Respray Memory Foam Sprung mattress: from £118 at Amazon

Today's 5 best Amazon Prime Day mattress deals of 2026

Amazon Prime Day mattress deals 2026: FAQs

When is the Amazon Prime Day sale 2026?

A person lies on the left side of the Nectar Premier Memory Foam mattress in our sleep studio, while another person jumps on the left hand side, testing motion isolation — (Image credit: Future)

Amazon Prime Day has traditionally taken place in mid-July, but the big sales have come early this year. Now held in June, Prime Day 2026 starts on June 23rd and has a closing date of June 26th.

This means that Prime Day is a four-day event, but we recommend shopping on the opening day to grab the top sleep deals before they sell out fast.

How do I choose a good mattress at Amazon?

When choosing a mattress on Amazon (especially during Prime Day), you'll likely be bombarded with ultra-cheap deals that can seem too good to be true — and that'd because they often are.

The Simba Simbatex Cool Mattress placed on a wooden bedframe and covered with neutral coloured bed linens and pillows — (Image credit: Simba Sleep)

So, when looking for a mattress on Amazon, choose a mattress thickness that's over 20cm (8") tall, as anything thinner will be totally unsupportive. We usually recommend 23cm (or 10") and above for most adult sleepers.

Look out for the green "Customers usually keep this item" badge, which is a good sign that the mattress is of decent quality.

Also, take a look at customer ratings and reviews, especially if the mattress is from a brand name that you don't recognise. While brands such as Simba, Nectar, and Dormeo are brands you can trust, you should probably avoid a cheap mattress from an obscure brand with only three reviews and an overall rating of under 4 stars.

Frances Daniels is a PPA-accredited journalist and Sleep Staff Writer at Tom's Guide with an MA in Magazine Journalism from Cardiff University. Her role includes covering mattress and sleep news and writing sleep product reviews and buyer's guides, including our Best Hybrid Mattress 2025 guide. She is interested in the relationship between sleep and health, interviewing an array of experts to create in-depth articles about topics such as nutrition, sleep disorders, sleep hygiene, and mattress care. She is also our specialist on mattress toppers — producing bed topper reviews and taking care of our Best Mattress Toppers 2025 guide — and leads content relating to fiberglass-free beds for a non-toxic sleep. Outside of Tom's Guide, she has written for Ideal Home and Marie Claire.