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King Size Mattresses

Explore our adjustable King mattresses, a great choice for couples. Our King-sized mattresses let you choose your ideal firmness on each side with generous space for both of you.

c1 smart bed mattress with gray tuffted headboard in a bedroom
Sleep Number c1 mattress
  • $1,499
4.6 rating stars(603) reviews
Sleep Number c2 mattress
  • $1,599
  • $200 OFF$1,799
4.7 rating stars(24868) reviews
Sleep Number c4 mattress
  • $2,399
4.7 rating stars(23584) reviews
Sleep Number p5 mattress with a Split Channel headboard
Sleep Number p5 mattress
  • $2,799
  • $400 OFF$3,199
4.7 rating stars(24336) reviews
Sleep Number pSE mattress
  • $3,599
4.7 rating stars(11366) reviews
Sleep Number p6 mattress with a Split Channel headboard
Sleep Number p6 mattress
  • $3,799
4.7 rating stars(20955) reviews
Sleep Number m7 mattress with a horizontal panel headboard
Sleep Number m7 mattress
  • $4,699
4.7 rating stars(7430) reviews
Sleep Number i8 mattress with a Split Channel headboard
Sleep Number i8 mattress
  • $4,099
  • $600 OFF$4,699
4.8 rating stars(67786) reviews
Sleep Number i10 mattress with a white horizontal panel headboard
Sleep Number i10 mattress
  • $6,199
4.8 rating stars(22123) reviews
Sleep Number iLE mattress
  • $6,199
4.8 rating stars(37256) reviews
Sleep Number ClimateCool Smart Bed
Sleep Number ClimateCool™ smart bed
  • $5,400
  • $800 OFF$6,150
4.8 rating stars(604) reviews
Sleep Number Climate 360 smart bed with adjustable firmness and temperature control
Sleep Number Climate360® smart bed
Includes Smart Adjustable Base
  • $12,999
4.7 rating stars(5146) reviews