King size mattresses

If it’s a king size mattress you’re after, our range of perfectly proportioned mattresses offer a little extra room to luxuriate in. Feather & Black offer a range of styles from pillow top to zip & link, all of which offer cushioned, comfortable support for a great night’s sleep. We also offer a range of king beds to accompany our king size mattresses.

Soft Medium Firm Very Firm Dual

32 products

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Tension

Soft Medium Firm Very Firm Split

Brand

Feather & Black Flaxby Flaxby Platinum Harrison Spinks Hypnos Sleepeezee Vispring

Features

Advanced Gel Memory Foam Natural Fillings Orthopedic Pillow Top Pocket Springs

Filling

Advanced Gel Alpaca Wool Bamboo Cashmere Cotton Flax Hemp Latex Memory Foam Mini Springs Mohair Pocket Springs Rebound Wool Silk Wool

Spring Count

1,000 - 4,999 5,000 - 9,999 10,000 - 14,999 15,000 - 19,999 Over 20,000

Price

£499 - £9,999

100 Night
Comfort Guarantee

0% APR Finance
Available*

Free Delivery
on all orders

Recycling
Service

Up to 10 Year
Guarantee

Free Fabric
Samples

Need help choosing?

Take a look at our mattress guides.

What size is a king size mattress?

King size mattresses are 5 foot wide and 6 foot 6 inches long, which is the same as W150cm x L200cm. A king mattress is 3 inches longer than a double mattress, so if you’re over 6ft tall the extra length will ensure you have a good amount of space to sleep comfortably.

What makes a king size mattress good quality?

The craftsmanship that goes into making our king size mattresses, alongside the luxurious materials and fillings used, ensures the high quality of our king mattresses. The quality of your mattress is crucial in determining how well you sleep, so it’s important to make sure yours is comfortable, supportive and durable. We do offer mattress trials on all our mattresses to help you decide.

How many pocket springs are in a king size mattress?

A pocket spring count is essential in ensuring your new pocket spring king size mattress provides you with a well-supported, heavenly sleep. King size mattresses have around 1,000-15,000 pocket springs to provide a blissful sleep each night.

Are king size mattresses longer than queen mattresses?

Yes, king size mattress are 3 inches longer than a queen mattress. A queen mattress is the same size as a small double (4’ x 6’3/120cm x 190cm), so a king mattress is both wider and longer measuring 5 foot wide and 6 foot 6 inches long or W150cm x L200cm.

Is there a mattress bigger than a king size?

There are two mattress sizes that are bigger than a king size mattress, super king and emperor, both of which are available at Feather & Black. Both offer a superior sleeping space, with a super king mattress measuring 6 foot by 6 foot 6 inches, or 180cm x 200cm, and an emperor mattress measuring 6 foot 6 inches by 6 foot 6 inches, or 200cm x 200cm.