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.
- 20% off over £1,000 20% off over £1,000 Flaxby Platinum Lunar Mattress King from £4,999
- 20% off over £1,000 20% off over £1,000 Chaucer Mattress King from £1,699
- 20% off over £1,000 20% off over £1,000 Vispring Hartley Mattress King £9,999
- 20% off over £1,000 20% off over £1,000 Conrad Mattress King from £3,499
- 20% off over £1,000 20% off over £1,000 Flaxby Platinum Eclipse Mattress King from £5,999
- 20% off over £1,000 20% off over £1,000 Witham Mattress King £1,899
- 20% off over £1,000 20% off over £1,000 Boulton Mattress 10000 Springs, Medium - Firm Tension, King £1,899
- 20% off over £1,000 20% off over £1,000 Owen Mattress King from £2,699
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- 20% off over £1,000 20% off over £1,000 Winwood Mattress 6000 Springs, Medium - Firm Tension, King £1,099
- 20% off over £1,000 20% off over £1,000 Tennyson Mattress King from £2,299
- 20% off over £1,000 20% off over £1,000 Thames Mattress King £1,599
- 20% off over £1,000 20% off over £1,000 Fitzgerald Mattress King from £2,999
- 20% off over £1,000 20% off over £1,000 Coleridge Mattress King from £3,999
- 20% off over £1,000 20% off over £1,000 Walters Mattress 7200 Springs, Firm Tension, King £1,499
- 20% off over £1,000 20% off over £1,000 Swindale Mattress King £2,499
- 20% off over £1,000 20% off over £1,000 Vispring Heybrook Mattress King £7,999
- 20% off over £1,000 20% off over £1,000 Severn Mattress King £2,299
- 20% off over £1,000 20% off over £1,000 Medway Mattress King £1,899
- 20% off over £1,000 20% off over £1,000 Hypnos Organics 2 Mattress King from £4,999
- 20% off over £1,000 20% off over £1,000 Arlen Mattress 13200 Springs, Medium Tension, King £2,099
- 20% off over £1,000 20% off over £1,000 Byron Mattress King from £4,499
- 20% off over £1,000 20% off over £1,000 Flaxby Platinum Solstice Mattress King from £6,999
- 20% off over £1,000 20% off over £1,000 Hypnos Organics 3 Mattress King from £5,499
- 20% off over £1,000 20% off over £1,000 Hypnos Organics 4 Mattress King from £5,999
- 20% off over £1,000 20% off over £1,000 Hypnos Organics 6 Mattress King from £6,999
- 15% off over £500 15% off over £500 Belvoir Mattress King £899
- 15% off over £500 15% off over £500 Elsham Mattress King £999
- 15% off over £500 15% off over £500 Harewood Mattress King £799
- 20% off over £1,000 20% off over £1,000 Kingsbury Mattress King £2,999
- 20% off over £1,000 20% off over £1,000 Kingston Mattress King £3,999
- 15% off over £500 15% off over £500 Regency Topper King £999
- 20% off over £1,000 20% off over £1,000 Ribble Mattress King £2,299
Need help choosing?
Take a look at our mattress guides.
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.
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.
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.
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.
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.