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The Zinus Calm 10" is a tight-top all-foam mattress in king size, built from cooling gel memory foam over green tea and charcoal-infused comfort layers. It is a budget-priced bed-in-a-box that ships rolled and expands on the frame. The gel infusion is meant to counter the heat that plain memory foam traps, and the 10-inch profile suits standard sheets and most platform beds. Against pricier foam rivals it gives up edge support and a removable cover, and owners report it sleeps warm for some and softens over time.
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Lowest price we've seen: $164.00 on Nov 13 at Walmart. Tracked across 1 store since Nov 13.
Ratings are solid overall, and most owners call it comfortable for the money, easy to set up and good for back and side sleepers. Complaints center on heat, softening and sagging after months of use, and a strong new-foam smell at first.
This is a 10-inch king-size mattress made of memory foam with a tight top. The top layer is memory foam infused with cooling gel, which helps regulate body temperature during sleep.
The foam layers contain green tea and natural charcoal. The memory and comfort foams are engineered to mold to the shape of the body, which soothes achy joints. The mattress is wrapped in a soft poly jacquard cover.
