Family research · sources reviewed 12 Aug 2026
Sleep Number Classic c Series
Entry smart-air mattresses c2 and c4.
Construction boundary
What can be grouped, and what cannot
The exact model stays explicit because comfort-layer depth differs; the Smart Control system is a component, not a separate mattress.
Official documentation
Facts supported by located manufacturer sources
- 01
Official support scope separately names c2 and c4 for 2023–2026 smart beds. 1
Independent context
Outside findings with strict scope limits
- 01
Independent c2 comparison details apply only to c2 and its stated configuration. 3
c2 exact-model context.
Not established
Evidence gaps
These details were not found in the reviewed sources and are not filled with assumptions.
- Current exact comfort-layer recipeNot verified in the reviewed sources
- Base included-versus-optional termsNot verified in the reviewed sources
- Long-term hardware/service patternsNot verified in the reviewed sources
Documented mattresses
Mattresses documented in this family
Sources
Sources used for this mattress
- 01Official catalog: Sleep NumberGet to know your Sleep Number smart mattress ↗
2023–2026 c2, c4, p5, p6, pSE, m7, iLE, i8, and i10 scope and Smart Control system.
- 02Official specifications: Sleep NumberClimate collection ↗
Climate360 and ClimateCool system distinction.
- 03Independent review: Sleep FoundationTempur-Pedic versus Sleep Number ↗
Named Sleep Number c2 comparison context only.
- 04Independent review: Tom's GuideSleep Number i8 month-long review ↗
i8 paired with FlexFit 3 base; mattress and base effects cannot be fully separated.