Casper mattress discount: get 40% off sitewide with this discount code

US and UK readers: get the most out of your bedtime with a bunch of new Casper mattress discount codes which could see you save up to 40% off everything on the site...

Casper Mattress discount: mattress in bedroom with box
(Image credit: Casper)

There's a new Casper mattress discount code which is just in time for the Bank Holiday weekend (yay!). This will certainly go a long way in helping you score one of the best mattresses in the world for sure. 

So, right now, using the discount code below, UK readers can take 40 per cent off everything in your basket when you shop the Casper sale – no matter what size of mattress, mattress protector or bedding you choose – thanks to this incredible offer from the brand. And if you're in the US you can save 10 per cent off everything when you check out with a Casper mattress, too.

We've also spied with our eagle-eyes that the mattresses are also slightly discounted on Amazon, so if Casper have run out of stock then you can still pick up a bargain with the warehouse-giant.

Use the links below to jump to what you want to see...

COVID-19 update: At the time of writing, delivery of Casper mattresses are now 100% contact-free and there are no changes to shipping times, but delays are expected with returns. 

Not sure if you can buy a mattress online without trying it first? Read our Casper mattress review for a more in-depth look – it comes with a 100-night free trial and a 10 year warranty to ease your mind further.

Head to our mattress deals page for more incredible offers.

Casper UK cheap mattress deals

Casper | 40% off all mattresses
Use the code SLEEPMORE at the checkout to bag a decent saving on one of the best mattresses around. This discount code will work on all size and type mattresses, plus all accessories, so you can get the most out of your bedtime.  Deal ends: unknown.View Deal

Casper US cheap mattress deals

Casper | 10% off sitewide
Save 10 per cent sitewide when you use the code GOODSNOOZE at the checkout. This discount code will work on all size and type mattresses, plus all accessories, so you can get the most out of your bedtime.  Deal ends: 11:59pm, 11 May 2020View Deal

Casper mattress pricing

Casper Mattress

(Image credit: Casper)

Casper mattress specs

The best mattress you can buy for all types of sleepers

Filling: Comfort foam/memory foam
Sizes available: Single - Super king (including EU sizes)
Depth: 24cm
Comfort grade: Medium
RRP: £400-£800
Warranty: 10 years
Trial: 100 nights
Reasons to buy
+Cool, comfy foam+Brilliant customer service
Reasons to avoid
-Usual chemical smell, but will fade

These are the current cheapest prices of each size Casper mattress, and since there are two other mattresses – an Essential and Hybrid version – we’ve listed their cheapest prices, too. We've popped the cheapest option first.

The Essential mattress:

  • Essential single mattress: SOLD OUT 
  • Essential small double mattress: £375 at Amazon
  • Essential double mattress: £240 at Casper
  • Essential king mattress: SOLD OUT
  • Essential super king mattress: £330 at Casper
  • Essential EU single mattress: SOLD OUT
  • Essential EU double mattress: SOLD OUT
  • Essential EU king mattress: SOLD OUT

The Casper mattress:

  • Casper single mattress: was £400, now £240 at Casper
  • Casper small double mattress: SOLD OUT
  • Casper double mattress: SOLD OUT at Casper, £562.56 £547.87 at Amazon
  • Casper king mattress: SOLD OUT at Casper, £629.51 £606.01 at Amazon
  • Casper super king mattress: SOLD OUT
  • Casper EU single mattress: OUT OF STOCK
  • Casper EU double mattress: £650 £455 at Casper
  • Casper EU king mattress: SOLD OUT

The Hybrid mattress:

  • Hybrid single mattress: SOLD OUT 
  • Hybrid small double mattress: £750 £450 at Casper
  • Hybrid double mattress: SOLD OUT
  • Hybrid king mattress: SOLD OUT
  • Hybrid super king mattress: SOLD OUT
  • Hybrid EU single mattress: was £550, now £330 at Casper
  • Hybrid EU double mattress: was £850, now £340 at Casper
  • Hybrid EU king mattress: SOLD OUT

More Casper mattress deals

10% off mattresses
Discount code above not working? Try LIFEWELLSLEPT at checkout for 10% off. This means you can save £80 on the Casper mattress or up to £55 on the Essential mattress. It also works on accessories when you’re purchasing a mattress.View Deal

Refer a friend, £50 off for them and a £50 Amazon voucher for you
Have a friend who’s in the market for a new mattress, duvet or bedding set? Refer them to the Casper website and they’ll get £50 off their first order while you’ll be thanked with a £50 Amazon gift card. Start spreading the snooze.View Deal

100-night free trial
Buying a mattress online can be nerve wracking, we know. Luckily, though, Casper offers a 100 night free trial, so that if you’re not getting on with the mattress after 99 nights of sleeping on it, you can send it back free, and you’ll get a full refund. This is also the case with the pillows and bedding sets.View Deal

Free delivery
No matter what you purchase on Casper, whether it be a super king size mattress or a pillowcase set, it all comes with free delivery. Even more of an excuse to shop, we think.View Deal

10 year warranty
Purchasing a mattress online comes with several doubts, this is why  customers who shop at Casper can be rest-assured they're buying a good quality product. The Casper mattress comes with a 10 year warranty should anything disappoint.View Deal

Casper Mattress accessory prices

Award-winning mattresses aren’t all Casper sells: there’s a range of pillows, duvets, mattress protectors, night lights and even dog beds. They're ALL (apart from the Glow) in the Easter offer, too. Find all products below.

Casper Pillow | RRP: £65-£75
Available in standard (50 x 75cm) or super king size (50 x 90cm), the Casper pillow perfectly complements any mattress. The pillow is filled with polyester microfibre, lined with polyester fabric and features a 100% cotton cover. It also has a three year warranty.

Casper Duvet | RRP: £190 - £320
Made from a mix of merino wool and ethically sourced down, the Casper duvet is available in four different sizes. Featuring a 100% cotton shell, the duvet features sewn-in chambers to keep the filling in place. It’s also OEKO-TEX® 100 certified so safe for babies and children. It comes with a one year warranty and a free 100 night trial. You can also machine wash it on cold and tumble dry low.View Deal

Casper Mattress Protector | RRP: £70 - £95
The only way to protect any mattress from spills, dirt, and wear and tear, the Casper mattress protector is made from a mix of polyester, spandex, nylon, and polyethylene. It’s waterproof and breathable, too. It also comes with a one year warranty and a free 100 night trial.View Deal

The Casper Bed Sheets | RRP: From £175
The Casper bedding is available to purchase all together or separately. A pillowcase set starts from £40, a fitted sheet from £45, and a duvet cover from £70. Made from premium Supima® cotton found in California’s Central Valley, the bedding is 400 thread count, and super soft. The fitted sheet also features an elastic tie so you can guarantee it won’t move around during the night. Psst, there’s also a one year warranty on them.View Deal

Casper Platform Bed | From £900
Available in five sizes and made from powder-coated, aircraft-grade aluminium beech wood (slats) and plastic, the Platform Bed comes in two different colours. You can also add a headboard. This bed frame comes with a five year warranty and a 30 night free trial, too.View Deal

Casper Adjustable Base | From £550
Compatible with any flexible foam mattress, the Casper Adjustable Base has three different height options. Made from a mix of solid wood and steel, you can raise either your head or feet to ensure your sleep is more comfortable. It also comes with a three year warranty and a 30 night trial.View Deal

Casper Glow Light | From £109
Not only is the Casper glow light self-dimming, but it’s designed to lull you into better, deeper sleep. It also makes waking up in the morning easier and fills the room with soft light. It’s wireless, too There's a one year warranty and you can try it for 30 nights.View Deal

Casper Nightstand | £200
Available in two different colours, the Casper Nightstand arrives assembled and is made from medium-density fibreboard, aluminium and plastic laminate. It also comes with a five year warranty. Ideal for those going for a clean, modern look in their bedrooms.View Deal

Casper Dog Bed | RRP: £115 - £210
Because your furry friend deserves a comfy place to sleep, too, the Casper Dog bed comes in three different colours and three different sizes. Made from pressure-relieving memory foam and durable support foam, your pup will love it, but if they don’t, you can get your money back before 30 days. It’s also easy to clean, keeps its shape and has a one year warranty.View Deal

More mattress deals