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The GREOO King is a 14-inch hybrid mattress in a box that pairs gel memory foam with individually wrapped pocket coils. It is a thick, medium-feel bed aimed at shoppers who want a traditional spring-and-foam feel without visiting a showroom. The foam is CertiPUR-US certified and the cover is OEKO-TEX Standard 100 certified, which puts its material safety claims in line with better-known boxed brands. Against thinner all-foam rivals it offers more edge structure and airflow, but it is heavy and needs a solid base.
In stockSold by GREOOReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
With a 4.3 average across thousands of ratings, most owners describe a comfortable medium feel and good support for the money. Complaints cluster around the unboxing smell and the mattress's weight.
This is a 14-inch king-size hybrid mattress that ships in a box. It combines gel memory foam with individually wrapped pocket springs in an 8-layer design. The layers are built to support the spine and help the mattress stay cool.
The gel memory foam is high-density and resists sagging. The individually wrapped coils isolate motion. The knit cover is skin-friendly. The mattress has reinforced edge stitching and an anti-slip base.
The outer fabric is certified to OEKO-TEX Standard 100. The inner foam is CertiPUR-US certified.
