Our analysis of how well a mattress maintains its original shape, height, firmness, and side/back sleeping support after 8 years of simulated use. A measure of how much vibration is transmitted ...

The sale includes the Serta Perfect Sleeper Pro, iComfort mattress, Perfect Sleeper, and more. (For more ways to save, check out our guide to the best Serta promo codes). Serta sale: up to $725 ...