Mattress Firmness: Although users can choose a specific firmness level for both mattresses, C4 has a slightly softer feel than C2 due to its extra layer of comfort foam.Durability: The Sleep Number C2 and C4 mattresses have sturdy and durable materials with a 15-year warranty.They have inflatable air foam material so you can control the air to choose your desired firmness for the mattress. Firmness Options: C2 and C4 allow you to decide what firmness of the mattress you would like.It regulates the mattress temperature to absorb heat, keeping the mattress cool. Temperature Regulation: Sleep Numbers C2 and C4 offer a cooling material layer that is best for hot sleepers.Couples: Couples and even those who sleep with their pets will enjoy the comfortable, customizable firmness level of the C4 mattress.Stomach sleepers: You can get the right comfort sleeping in your stomach with a C4 mattress since it allows alignment of your spine down to your back due to its firmness level.It acts like a dough that conforms to any conceivable position. Combination sleepers: The C4 mattress has a responsive foam that allows combination sleepers to feel at ease when sleeping.Budget-conscious shoppers: C2 is an 8” mattress that allows you to sleep comfortably without breaking the bank.You can customize its firmness based on your desired level of comfort. Back sleepers: Back sleepers can indulge in the supportive firmness options that C2 mattresses offer.

C4 Overviewīoth Sleep Number 360’s C2 and C4 variants have distinct features that make them reliable mattresses.

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