The four layers of foam of the mattress come with a 10 year limited warranty, protecting the customer from any defects in the materials or workmanship of the product that develop from normal and reasonable use.
*The 100 Night Trial Program and 10 Year Limited Warranty are both voided if the mattress and/or sleep tracker leaves the US.
Full warranty here: https://www.eightsleep.com/eight-smart-mattress-warranty/