How long will the iComfort Zip Medium last before sagging?
Longevity is its honest soft spot, rated 6.2 out of 10. As with any foam bed the comfort layers compress over years of use and can leave a body impression, while the high-density core underneath holds firm. The thinner 1-inch memory layer should wear a bit more gracefully than a deep plush top. Built in Ontario from CertiPUR-US certified foam and backed by a 10-year warranty, it lasts well on a solid base but ranks fair, not excellent.
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