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Mattress Size Guide

The following are Sleep Number mattress sizes:

Mattress Size Dimensions
Twin 38" x 75"
Twin Extra-Long 38" x 80"
Full/Double 54" x 75"
Queen 60" x 80"
King/Split King 76" x 80"
California King 72" x 84"

Which size fits you best?

As a general guideline, choose a mattress that’s at least 4 inches longer than the height of the tallest sleeper and wide enough so each sleeper can comfortably rest without overlapping his/her sleeping partner.

Twin

Twin size mattresses are a popular size for kids. (38” wide X 75” long)

Twin Extra-Long

Twin XL size mattresses are five inches longer than a Twin, perfect for older kids or adults. (38” wide X 80” long)

Full

Full size mattresses are 16 inches wider than a Twin and a great step up. (54” wide X 75” long)

Queen

Queen size mattresses are designed for couples. (60” wide X 80” long) Add a FlexFit™ adjustable base for ultimate comfort.

King

King size mattresses, also referred to as Eastern King, are designed for couples who want more sleeping space. (76” wide X 80” long) Choose a FlexTop® King or a Split King mattress and a FlexFit™ adjustable base for the ultimate in individualized comfort.

California King

California King size mattress is four inches longer and slightly narrower than a standard King mattress, perfect for couples who want more sleeping space. (72” wide X 84” long) Sleep Number® adjustability lets you change the firmness, comfort and support whenever you like. Chose a FlexTop® King or a Split King mattress and a FlexFit™ adjustable base for the ultimate in individualized comfort.
Shop for Your Sleep Number® Bed 

Frequently Asked Questions