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King size mattress South Africa, 183 x 188cm, Revive Memory Foam cross-section

King Size Mattresses South Africa (183 x 188cm)

A king (183 x 188cm) is 31cm wider than a queen. That extra width changes what sharing a bed feels like: less negotiating for space, less disturbing each other, more room to sleep in whatever position your body actually wants.

King mattress size in mm

Size Width Standard length Extra length Room width with 600 mm each side
Double 1370 mm 1880 mm 2000 mm 2570 mm
Queen 1520 mm 1880 mm 2000 mm 2720 mm
King 1830 mm 1880 mm 2000 mm 3030 mm
Super King 2000 mm 2000 mm (built in) Not applicable 3200 mm

King is 310 mm wider than Queen. Super King is 170 mm wider and 120 mm longer than King. Extra length is available on Revive and Ultra 200 only. The 600 mm each side is the clearance we recommend in our mattress size guide.

King mattress specifications and prices

Model Total height Support core Comfort layer Rated weight Warranty Mattress only Base Set Extra length mattress only
Revive Memory Foam 250 mm 65 kg/m3 high-density foam 30 kg/m3 memory foam 140 kg per side 10 years R8,999 R9,999 R10,799
Ultra 200 Memory Foam 300 mm 60 kg/m3 open-cell memory foam, 5 layers Built into the 5 layers 200 kg per sleeper (400 kg total) 10 years R11,199 R12,199 R13,499

Prices in rand, VAT included, read from our live store on 4 October 2026. Specifications as published for each model.

What we make in King

  • Memory Foam Mattress, Revive: R8,999 mattress only, or R9,999 as a Base Set (mattress plus matching base). Open-cell memory foam over a 65 kg/m3 high-density core, 25cm total. Contours around shoulders and hips, and absorbs movement so a restless partner does not wake you. Extra-length 200cm also available at R10,799. 10-year warranty.
  • Memory Foam Mattress, Ultra 200: R11,199 mattress only, or R12,199 as a Base Set. 30cm total, double-sided, rated 200kg per sleeper (400kg total). Extra-length 200cm also available at R13,499. 10-year warranty.
  • Hybrid King Base Set: R9,999. Note this is a base set, not a standalone king mattress.

Our Comfort Foam and Active Foam ranges are made in Single, Three-Quarter, Double and Queen.

Included with every mattress Detail
Delivery Free nationwide, a small fee only for extreme rural areas
Typical delivery time 3 to 7 working days nationally, with a guaranteed on or before date in your confirmation email
Money-back guarantee 30 days from delivery
Home trial 365 nights (comfort exchange from night 14)
Warranty Fixed written term, never pro-rated: 10 years on Active, Revive and Ultra 200, 3 years on Comfort Foam
Payment options Stitch (2 to 6 interest-free instalments, or card), PayJustNow, Mobicred, FeverTree Finance, in-house account

Planning tip: a king needs a room of roughly 3.5m x 4m to leave comfortable space around the bed. If your room is tighter, the queen (152 x 188cm) is the smarter call. Bigger than a king? See Super King (200 x 200cm).

Not sure? WhatsApp us on 087 087 1610.

Frequently asked questions

What are the exact South African mattress sizes in cm?

Single 91 x 188 cm, Three Quarter 107 x 188 cm, Double 137 x 188 cm, Queen 152 x 188 cm, King 183 x 188 cm and Super King 200 x 200 cm, plus a made-to-order Extra Length option that extends the Single, Three Quarter, Double, Queen or King length beyond 188 cm.

Is South African Queen the same as US Queen?

No - South African sizing does not match UK or US conventions. Always check the exact cm, not just the size name, before ordering a base, bedframe or fitted sheet.

What size mattress do I need for two people?

Queen (152 x 188 cm) is the minimum most couples find comfortable. A Double (137 x 188 cm) works if neither person moves much at night. A King (183 x 188 cm) is better if you have kids, pets, or want more space.

What is your trial and return policy on any size?

365 nights at home, no minimum hold period, on every mattress and every size.

Sleep better. 365 night trial. 10 year warranty. 30 day money back guarantee.

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Comfort Foam From R2,399
Active Foam From R3,399 MOST POPULAR
Hybrid Foam From R6,299 BEST DEAL
Revive Foam From R4,899
Motion Isolation — ✓ ✓ ✓
Memory Foam — — — ✓
Edge Support — — ✓ —
Anti-Dust Mite — ✓ — ✓
Best For Students & Guests Couples & Families Heavier Sleepers Pain Relief & Luxury
Firmness Firm Medium-Firm Medium Medium-Soft
Warranty 3 Years 10 Years 10 Years 10 Years
Weight Limit 70kg 100kg 100kg 140kg
Thickness 18cm 22cm 29cm 25cm
What You Get Built for firm support without the premium price tag. Perfect for student digs, spare bedrooms, or anyone who values a solid night's rest. Hits the sweet spot - not too firm, not too soft. Motion isolation means your partner can toss and turn without waking you up. Extra-thick profile with reinforced edge support. Built strong for people who need their mattress to work harder. Memory foam moulds to your body, relieving pressure on hips and lower back. The mattress you'll wish you'd bought years ago.

Rated 4.7 out of 5 by 523 Mr Mattress customers on Google

Rated 5 out of 5 on HelloPeter, 6.4 Trustindex, and we reply to every review

Over 25,000 Mr Mattress beds delivered across South Africa

Official world record holder for bed base strength

We publish the numbers most mattress retailers leave out: foam density in kg/m3, weight capacity per sleeper, and SABS certification. Our warranties run for a fixed written term and are never pro-rated down year after year.

See our verified government and Parliament track record →