There are 1000s of May mattress deals − these are the only ones worth buying

Saatva Classic Mattress | Was $2,095, now $1,695 at Saatva
Save $400 on the best bed we've ever tested. Topped with thick foam for pressure relief and lined with supportive springs to optimize airflow, the Saatva Classic is suitable for all sleepers: front, back, or side, hot or cool.

You can find more detail in our Saatva Classic Mattress review.

Nectar Memory Foam Mattress | Was $1,099, now $649 at Nectar
Our expert tester, Casey, suffers from fibromyalgia, but she never once woke up with aches and pains on the Nectar Memory Foam Mattress. She attributes that to the thick layers of plush foam, which relieve pressure from your hips, knees, and shoulders.

You can find more detail in our Nectar Memory Foam Mattress review.

Tempur-Pedic ProAdapt Mattress | Was $3,399.00, now $3,199.00 at Tempur-Pedic
Even at a discount, the Tempur-Pedic ProAdapt Mattress is seriously expensive, but I'd argue it's worth the money, especially if you're a side sleeper. Tempur foam and responsive springs is a winning combination, designed to support your spine and cradle your body.

You can find more detail in our Tempur-Pedic ProAdapt Mattress review.

Emma Original Mattress | Was $1,159.00, now $579 at Emma
You can save a whopping 50% on this memory foam mattress when you shop the May mattress sales. Like any memory foam mattress, the Emma Original sleeps a little warm, and its edge support leaves a little to be desired, but the motion isolation is excellent: ideal for light sleepers and anyone who shares a bed.

You can find more detail in our Emma Original Mattress review.

Nolah Original Mattress | Was $1,449.00, now $942 at Nolah
Where memory foam tends to trap heat, Nolah's patented AirFoam is perforated with thousands of tiny little holes to optimize airflow through the mattress. I'd recommend the Nolah Original Mattress to almost anyone, though it might not be firm enough for stomach sleepers.

You can find more detail in our Nolah Original Mattress review.

Bear Elite Hybrid Mattress | Was $2,305.00, now $1,499.00 at Bear
This mattress ticks all my boxes. It's soft enough to cushion your joints, sufficiently supportive to lengthen your spine, and thermoregulating for every climate and all sorts of sleepers. With this $800 discount, the Bear Elite Hybrid Mattress is now firmly within reach. 

You can find more detail in our Bear Elite Hybrid Mattress review.

Zinus Cooling Green Tea | Was $599.00, now $499.00 at Zinus
You'd never believe it, but this memory foam model is one of the best cooling mattresses on the market. Each slab of thick foam is infused with cooling green tea and copper to dissipate heat and wick moisture. My advice: don't spend any less than this. Much lower than $500, and you're getting a bad bed at a great price.

You can find more detail in our Zinus Cooling Green Tea Mattress review.

Helix Dusk Luxe Mattress | Was $2,373.80, now $1,780.30 at Helix
This hybrid mattress marries the plush comfort of memory foam with the airflow of an innerspring to support all sleep positions. The Helix Dusk Luxe is breathable and bouncy, but it isn't perfect: the motion isolation could use some work.

You can find more detail in our Helix Dusk Luxe Mattress review.

Avocado Green Mattress | Was $2,799.00, now $2,379.15 at Avocado
Filled with organic Talalay latex and topped with organic wool and cotton, the Avocado Green Mattress is a dream for eco-conscious shoppers. This bed comes in three styles − firm for back and stomach sleepers, plush for pressure relief, and medium for everybody else.

You can find more detail in our Avocado Green Mattress review.

Saatva Zenhaven Latex Mattress | Was $3.295, now $2,945 at Saatva
This flippable mattress boasts a dual-sided design, so that you can pick and choose the firmness level that suits you. It's the sort of bed that would be great for a guest room, so that each individual guest can get the best night's sleep.

You can find more detail in our Saatva Zenhaven Latex Mattress review.

Woolroom Hebridean 3000 Mattress | Was $2,298.00, now $1,838.40 with code SLEEP20 at Woolroom
Contrary to popular opinion, organic wool isn't scratchy nor stifling, but breathable and durable. One of our expert testers, Sophie, sampled the Woolroom Hebridean 3000 Mattress in the middle of spring, and she couldn't believe how cool it kept her.

You can find more detail in our Woolroom Hebridean 3000 Mattress review.

PlushBeds Botanical Bliss Mattress | Was $3,049.00, now $1,699.00 at PlushBeds
Springy and responsive, this organic mattress comes highly recommended by orthopedic specialists and chiropractors. You can get it in nine sizes, three heights, and two firmnesses, to meet your sleep needs and room size. 

You can find more detail in our PlushBeds Botanical Bliss Organic Latex Mattress review.

Birch Luxe Natural Mattress | Was $2,623.80, now $1.967.80 at Birch
Now, this natural mattress isn't certified organic, but it's still non-toxic and eco-friendly. The Birch Luxe Natural Mattress incorporates GOTS and GREENGUARD Gold-certified materials for sustainable comfort, and it still comes in a neat little box for your convenience.

You can find more detail in our Birch Luxe Natural Mattress review.

TEMPUR-Adapt Mattress Topper | Was $419.00, now $251.40 at Tempur-Pedic
Discounts are few and far between at Tempur-Pedic, and they'll normally only knock off a few dollars from the listing price. That's why it's such a nice surprise to see the TEMPUR-Adapt Mattress Topper retailing for just 60% of its RRP. That's three inches of pressure-relieving foam, plus a high-stretch knit cover, for just $250.

ViscoSoft Select High Density Mattress Topper | Was $269.95, now $199.95 at ViscoSoft
As a recent grad who wrestled with a seriously uncomfortable college bed, I reckon this is the best mattress topper for dorm beds. This topper is plush enough to soften up a firm mattress, yet sufficiently supportive to prevent slipping and sagging. Plus, it's infused with cooling copper to soothe hot sleepers.

Sijo TempTune Mattress Pad | Was $175.00, now $157.50 at Sijo
This thermoregulating mattress pad is designed to meet the needs of hot and cold sleepers living in warm, cool, or temperate climates. The TempTune Mattress Pad is woven from Supima cotton for supple strength and filled with Sijo's secret blend of fibers for heat distribution.

Buffy Plushy Mattress Protector | Was $129.00, now $103.20 at Buffy
This mattress protector feels more like a mattress topper to me. It's soft and squishy enough to transform the feel of your old mattress. This mattress pad is thermoregulating and moisture-wicking to stop sweat from seeping through and staining your bed.

Slumber Cloud Core Mattress Protector | Was $199.00, now $139.30 at Slumber Cloud
Tailor-made for hot sleepers, this mattress protector works to cool your bed and your body from the inside out. It's also been on 'Final Sale' for what feels like forever. If you don't buy it this Memorial Day, I recommend circling back to the 4th of July sales.