King Size Mattresses
No other mattress features the Purple GelFlex Grid, a layer of flexible gel that’s firm enough to support your frame, but soft enough to reduce tension and pressure. It’s comfort that’s great for your whole body.
Each Mattress Purchase Includes
Flexible financing options
Check if you prequalify without affecting your credit score
10 year warranty
so you can rest easy (no pun intended) knowing we’ve got you covered.
100 night trial
to love your mattress. If not, we’ll pick it up. No questions asked.
Free shipping
Get your mattress shipped straight to you at no extra cost – with complimentary white-glove delivery available for select mattresses.
Purple Essential Collection King Size
Our Purple Essential Collection mattresses includes Purple's proprietary GelFlex Grid for instantly adaptive support + pressure relief. Find perfect solutions to common sleep complaints at our best price.
Restore Hybrid Collection King Size
Purple's bestselling Restore Hybrid collection has been upgraded. Patented GelFlex Grid technology combines with all-new comfort layers and responsive coils to deliver the ultimate in cooling comfort, enhanced pressure relief, and instantly adaptive support.
Rejuvenate Luxe Collection King Size
Meet the most comfortable mattress of all time. All-new DreamLayer™ and layered Grid technologies offer unmatched pressure relief and temperature bliss.
Is a King Size Right For Me?
A king-size mattress is 16 inches wider than a queen-size mattress and also the same size as two twin XL mattresses pushed together.
The king-size mattress is ideal for a room that is at least 12 x 12 feet in order to comfortably accommodate your king-size bed.
Most people would agree that the best mattress for couples is a king-size mattress. The king will comfortably fit couples with extra room to spare.
Exclusively at Purple
Exclusively at Purple
Revolutionary GelFlex Grid comfort
Our proprietary technology reduces pressure and provides support, adapting to your every move for unparalleled comfort.
Still need help deciding?
Try Purple in a store near you
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Connect with a Sleep Genius
Our Sleep Geniuses answer questions and help you find your dream mattress.
Frequently Asked Questions
A standard king size mattress is 80" long and 76” wide.
California king beds are longer and narrower than standard king beds. Read more about the difference in King vs Cal-King mattress sizes:
King Mattress: 76” wide x 80” long
California King Mattress: 72” wide x 84” long
The cost of a king size mattress can vary significantly across brands. Purple’s king size mattresses cost between $1,599 - $9,499, depending on model choice. Financing options are available for as low as 0% APR. All Purple mattresses include free shipping and easy returns, a 100-night risk-free sleep trial, and a 10-year limited warranty. There’s no stress if the mattress isn’t a match. Just contact Purple’s customer service team within the first 100 days for a refund.
Purple mattresses are not intended for use with a box spring. Our mattresses are best supported by an adjustable base or platform frame, like our Upholstered Bed Frame and Metal Platform. Meanwhile, our Flat Foundation adds proper support to bed frames that lack supportive slats. All of our bed frames and foundations are made specifically to support Purple mattresses, so you know they’ll be a perfect fit and protect your investment for years to come.
Not quite. While two twin mattresses are the same width as a king mattress, they are 5" too short. However, two twin XL mattresses are the same size as a king mattress. This is known as a split king. A split king measures 76” wide x 80” long, just like a standard king.
The best king size mattress is one that provides the right spinal alignment, pressure relief, and comfort for your body type and sleep style. And for that reason — it’s a Purple mattress. Our patented GelFlex Grid is the only mattress material that instantly relieves pressure for pain relief and proven deeper sleep. Couples love Purple because the Grid sleeps cool, minimizes motion transfer, and adapts to every body type + sleep position. If you and your partner have unique sleep needs and preferences, Purple is best.
The best place to buy a king size mattress is right here at Purple. Check out our bestselling king mattresses: the RestorePlus® Hybrid Mattress and the RestorePremier® Hybrid Mattress — with responsive coils for enhanced pressure relief and temperature balance. Our mattresses can be purchased online or at 50+ Purple showrooms across the US — as well as thousands of retail partners. Use our store locator to find a retailer near you.
The best king size mattress is one that provides the right spinal alignment, pressure relief, and comfort for your body type and sleep style. And for that reason — it’s a Purple mattress. Our patented GelFlex Grid is the only mattress material that instantly relieves pressure for pain relief and proven deeper sleep. Couples love Purple because the Grid sleeps cool, minimizes motion transfer, and adapts to every body type + sleep position. If you and your partner have unique sleep needs and preferences, Purple is best.
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