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ZINUS 4 Inch Green Tea Memory Foam Mattress Topper

ZINUS 4 Inch Green Tea Memory Foam Mattress Topper

By ZINUS · Mattress Toppers · Health & Lifestyle

  • 4 inch thickness (1.5 inch memory foam + 2.5 inch base foam)
  • Green tea and charcoal infused memory foam
  • CertiPUR-US certified
  • Full size (54 x 75 inches)
  • 5 year limited warranty

Price not listed

New
Used, refurbished, open-box

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Problems, parts and running costs

Summary

A 4-inch slab of green tea and charcoal infused memory foam over high-density support foam, CertiPUR-US certified, shipped compressed in a box for softening a firm mattress. Check the feel before you commit: it runs plush and warm, with no cover or straps included, and it needs up to 72 hours to fully expand.

Strengths

  • Pressure relief and comfort; softens a firm mattress; some users report improved back and hip aches.
  • Green tea and charcoal infusion associated with a fresher sleep surface.
  • Convenient compressed (WonderBox) packaging.
  • CertiPUR-US certified foam.
  • ZINUS green tea foam line generally praised by Reddit owners for value.

Weaknesses

  • Initial chemical or off-gassing smell on unboxing.
  • Too soft for some sleepers; sinking-in feeling.
  • Warmer sleep for hot sleepers; no gel cooling.
  • No cover or attachment straps; 4 inches needs deep-pocket sheets.
  • Minor cosmetic issues: layer separation at edges, sizing discrepancies.
  • No independent instrumented test of this exact topper was found.

Verified specifications

ProductZINUS 4 Inch Green Tea Memory Foam Mattress Topper.
Thickness4 inches; the line is also sold in 1.5-inch and 3-inch thicknesses.
Constructiongreen tea and charcoal infused memory foam over high-density support foam.
Infusionsgreen tea extract plus activated charcoal for odor and moisture control; some listings also mention plant or castor seed oil.
CertificationCertiPUR-US certified foam.
Coolingno gel in this model; review sources say it sleeps warmer than gel toppers.
Warranty5-year limited warranty.
SizesTwin, Full, Short Queen, Queen, King, Twin XL.
Cover and strapsnone included; use a fitted sheet.
Model numbersAZ-GTFT-400F (Full) and AZ-GTFT-400Q (Queen); other sizes use matching size suffixes.
Full research notes and sources

Expansion and off-gassing

Initial off-gassing smell on unboxing typically dissipates within a couple of days with airing. Keep it ventilated during expansion and avoid sealing it under tight bedding right away.

Feel and warmth

This model has no gel cooling, and review sources say it sleeps warmer than gel toppers. With no included cover or straps, use a fitted sheet, and 4 inches calls for deep-pocket sheets.

Warranty and care

The warranty is 5 years limited, covering defects in workmanship and materials, with replacement or a pro-rated refund at the manufacturer’s option. It requires the topper be used on a mattress; use of a heating pad or electric blanket voids it. It also requires the original purchaser, original invoice, and an unremoved law tag, and excludes stains, mold, water damage, cuts, burns, and abnormal soiling. Normal foam softening during break-in is not a defect. Foam toppers should not be machine washed; the manufacturer states mattress covers should not be removed; protect it with a stain-resistant pad. No repair parts are offered; the topper is replaced as a unit if warranted.

Is it worth it?

Without reliable non-Amazon price data, specific value thresholds cannot be set from sources read. Value should be weighed against the absence of independent test data and the reported warmth and softness tradeoffs.

Which model this is

This page covers the ZINUS 4 Inch Green Tea Memory Foam Mattress Topper, sold in Twin, Full, Short Queen, Queen, King, and Twin XL. The product line is also sold in 1.5-inch and 3-inch thicknesses. Manufacturer model numbers vary by size: AZ-GTFT-400F (Full) and AZ-GTFT-400Q (Queen) are documented on the manufacturer manual host; other sizes use corresponding size suffixes. Do not confuse it with the separate ZINUS Swirl Gel topper, whose 4-inch version uses 1 inch gel memory foam plus 3 inches support foam. The Amazon listing for this topper is ASIN B071ZTK34B.

Sources

Manufacturer:

Independent reviews:

Owner reports:

Retailers:

Buying guides for this category

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