Sleep Number C4 vs Solaire vs Helix vs Purple
Sleep Number C4, Solaire, Helix and Purple all belong to the same product category. Their design elements allow the mattresses to adjust to the changing base.
Details
 SizesCali King, Full, King, Queen, Twin, Twin XL |  SizesCali King, Full, King, Queen, Twin XL |  SizesCali King, Full, King, Queen, Twin, Twin XL |  SizesCali King, Full, King, Queen, Twin XL |
ReversibleYes | ReversibleYes | ReversibleNo | ReversibleNo |
Quilted FoamNo | Quilted FoamYes | Quilted FoamNo | Quilted FoamNo |
Bed in a boxYes | Bed in a boxNo | Bed in a boxYes | Bed in a boxYes |
Comfort Level offeredAdjustable Firmness | Comfort Level offeredAdjustable Firmness | Comfort Level offeredFirm, Medium, Medium firm, Medium soft, Soft, Very firm, Very soft | Comfort Level offeredMedium firm |
