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The Serta Comfort Boost is a 2-inch memory foam mattress topper infused with green tea, sold in Twin, Full, Queen and California King. It sits at a medium feel, so it softens a firm mattress without swallowing you the way a thick 3- or 4-inch topper can. The 2-inch profile is the main trade-off: it adds cushioning but less pressure relief than deeper toppers, and it will not fix a sagging or worn-out mattress. It suits renters, guest beds and anyone who wants a modest comfort tweak rather than a new mattress.
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Lowest price we've seen: $125.99 on Nov 12 at Kohl's. Tracked across 1 store since Nov 12.
Owners of Serta's green tea memory foam toppers generally describe a soft, medium-feel layer that takes the edge off a hard mattress. Complaints center on heat and on the foam flattening sooner than expected.
The topper has a medium comfort level and medium firmness.
