Get 30% off all Casper mattresses, bedding and sleep accessories with this discount code

Casper is celebrating its sixth birthday, and to mark the occasion it's offering you 30% off your whole shopping basket (except the company's Glow light). To claim, all you have to do is add the code HAPPYBEDDAY at checkout. Not the best pun, but a very good deal nonetheless.

Hurry though, this offer ends 27 April (11.59pm). Missed the boat? Try our roundup of the best cheap mattress deals. 

Award-winning mattress maker Casper has three excellent mattresses. The Casper is a popular memory foam mattress that ranks very strongly in our best mattress guide (it also makes some of the best sheets around). The Essential is a cheaper foam mattress that provides outstanding support and comfort, despite its lower price, and is notching up rave reviews from the experts. And the latest model is The Hybrid, which Casper claims is its "most supportive yet". See how it fares against a main competitor in our Purple vs Casper mattress showdown.

Missed this offer? Why not browse current Casper mattress discount codes and deals..

• Get 30% off your whole Casper purchase with the code HAPPYBEDDAY
• See more Casper mattress discounts and deals

All three are bed in a box mattresses, which means they’ll be delivered vacuum-packed to your door in a conveniently sized box. All deliveries are contact-free, and will arrive in 1-3 business days. And they all come with a risk-free 100-night trial: if you don’t like them, you can return them and get your money back. 

With this deal, you'll get 30% cut from your total bill, so that includes the mattresses as well as Casper's quality pillows, bedding and even bed frames. Check out the savings you'll make on the mattresses alone...

The Essential mattress | UK Double £280 (was £400) at Casper
The already-very-reasonable Essential mattress is even cheaper with this deal. Two layers (18cm) of breathable premium foam provide outstanding support and comfort, and you get a handy easy-to-clean zip-off cover too. Just add code: YOUSNOOZE at checkout. Deal ends: 27 April (11.59pm)

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The Casper Hybrid mattress UK King size £630 (was £900) at Casper
Right now, you can get 30% off the Casper Hybrid mattress, which combines Casper's signature pressure-relieving foams with an added layer of high-quality springs to create the company's "most supportive mattress yet". Just add the code: HAPPYBEDDAY at checkout. This offer is proving popular – at time of writing, some of the sizes were sold out already. Deal ends: 27 April (11.59pm) 

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• The best duvet you can buy
• The best pillow for a better night's sleep
• Mattress protectors to keep your bed fresh