Use this guide to check Sleep Number® mattress sizes, base dimensions, base heights, and weight limits before delivery or setup. Start with your mattress size, then review the base type you plan to use.
Note: Mattress measurements can vary slightly by model and may change over time. Mattress profile height also varies by model.
Before You Measure
For the best fit, measure your room, doorway, staircase, and current bed frame before delivery. If your base will sit inside existing furniture, measure the inside width, inside length, side-rail height, and under-bed clearance.
Twin
A Twin mattress is a space-saving choice for kids’ rooms, bunk beds, guest rooms, or one sleeper in a smaller space.
Mattress
- Size: 38” x 75”
- Profile Height: Varies by model
Integrated Base
- Size: 37 ½” x 74”
- Base Height: 8”
- Weight Limit: 400 lbs.
- Base with Frame Height: 17”
Foundation Base
- Size: 38” x 75”
- Base Height: 6”
- Weight Limit: 400 lbs.
- Optional Leg Kit Size: 38” x 71 ¼”
- Base with Leg Kit Height: 16”
Room Size
- Best for rooms at least 7 x 9 feet.
Twin XL
A Twin XL mattress adds extra length for taller sleepers while still saving space.
Mattress
- Size: 38” x 80”
- Profile Height: Varies by model
Adjustable Base
- Size: 37 ½” x 79 ½”
- Base Height: Varies by setting
- Weight: 90 lbs.
- Weight Limit (including mattress): 600 lbs.
Integrated Base
- Size: 37 ½” x 79”
- Base Height: 8”
- Weight Limit: 400 lbs.
- Base with Frame Height: 17”
Foundation Base
- Size: 38” x 80”
- Base Height: 6”
- Weight Limit: 400 lbs.
- Optional Leg Kit Size: 38” x 76 ¼”
- Base with Leg Kit Height: 16”
Room size
- Best for rooms at least 8 x 10 feet.
- Also works well in narrow rooms and dorm spaces.
Full
A Full mattress gives one adult more space than a Twin. It can work for couples in a smaller room but may feel snug.
Mattress
- Size: 54” x 75”
- Profile Height: Varies by model
Adjustable Base
- Size: 53 ½” x 74 ½”
- Base Height: Varies by setting
- Weight: 104 lbs.
- Weight Limit (including mattress): 600 lbs. per side
Integrated Base
- Size: 53 ½” x 74”
- Base Height: 8”
- Weight Limit: 400 lbs.
- Base with Frame Height: 17”
Foundation Base
- Size: 54” x 75”
- Base Height: 6”
- Weight Limit: 400 lbs. (per side)
- Optional Leg Kit Size: 54” x 71 ¼”
- Base with Leg Kit Height: 16”
Room size
- Best for rooms at least 10 x 11 feet.
Queen
A Queen mattress is a popular choice for couples, taller sleepers, and primary bedrooms that need a balance of comfort and floor space.
Mattress
- Size: 60” x 80”
- Profile Height: Varies by model
Adjustable Base
- Size: 59 ½” x 79 ½”
- Base Height: Varies by setting
- Weight: 116 lbs.
- Weight Limit (including mattress): 600 lbs. per side
Integrated Base
- Size: 59 ½” x 79”
- Base Height: 8”
- Weight Limit: 400 lbs.
- Base with Frame Height: 17”
Foundation Base
- Size: 60” x 80”
- Base Height: 6”
- Weight Limit: 400 lbs. (per side)
- Optional Leg Kit Size: 60” x 76 ¼”
- Base with Leg Kit Height: 16”
Room size
- Best for rooms at least 10 x 10 feet.
King
A King mattress gives couples more personal space and works best in a larger bedroom.
Mattress
- Size: 76” x 80”
- Profile Height: Varies by model
Adjustable Base
- Size: 75 ½” x 79 ½”
- Base Height: Varies by setting
- Weight: 178 lbs. (2 pieces)
- Weight Limit (including mattress): 600 lbs. per side
Integrated Base
- Size: 37.5” x 79” (2 pieces)
- Base Height: 8”
- Weight Limit: 400 lbs
- Base with Frame Height: 17”
Foundation Base
- Size: 76” x 80” (2 pieces)
- Base Height: 6”
- Weight Limit: 400 lbs. (per side)
- Optional Leg Kit Size: 76” x 76 ¼”
- Base with Leg Kit Height: 16”
Room size
- Best for rooms at least 12 x 12 feet.
Additional Available Configurations
A Split King lets each side move independently when paired with a compatible adjustable base. Each sleeper can choose their own bed position and Sleep Number® setting.
A FlexTop King lets each sleeper raise or lower the head of their side while the lower half of the bed moves as one piece.
California King
A California King mattress is longer than a King mattress and is a good choice for taller sleepers or couples who want extra length.
Mattress
- Size: 72” x 84”
- Profile Height: Varies by model
Adjustable Base
- Size: 71.5” x 83.5”
- Base Height: Varies by setting
- Weight: 185 lbs. (comes in 2 pieces)
- Weight Limit (including mattress): 600 lbs. per side
Integrated Base
- Size: 35 ½” x 83” (2 pieces)
- Base Height: 8”
- Weight Limit: 400 lbs
- Base with Frame Height: 17”
Foundation Base
- Size: 72” x 84” (2 pieces)
- Base Height: 6”
- Weight Limit: 400 lbs. (per side)
- Optional Leg Kit Size: 72” x 80 ¼”
- Base with Leg Kit Height: 16”
Room size
- Best for rooms at least 12 x 12 feet.
Additional Available Configurations
A Split California King lets each side move independently when paired with a compatible adjustable base. Each sleeper can choose their own bed position and Sleep Number® setting.
A FlexTop California King lets each sleeper raise or lower the head of their side while the lower half of the bed moves as one piece.
Frequently Asked Questions
Can an adjustable base fit inside my current bed frame?
In many cases, yes. Measure the inside of your bed frame before delivery. Platform furniture, under-bed storage, slats, side rails, and headboard or footboard hardware can affect fit.
Can I use a Sleep Number mattress with my current adjustable base?
Sleep Number® mattresses require a solid surface, or slats that aren’t more than 2 inches apart.
Can an adjustable base sit directly on the floor?
Some adjustable bases can be used without legs on a flat surface. Check your base type and furniture setup before delivery.
How do I find the total height of my bed?
Add the mattress profile height to the height of your base, frame, or furniture. Mattress profile height varies by model. Review Finding My Bed Height for more details.