My Green Mattress Kiwi Organic Mattress – Certified Organic vs iSeries NXG 13.5" Hybrid Mattress 3500: which is safer?

My Green Mattress Kiwi Organic Mattress – Certified Organic is our pick: better on PFAS and on the overall hazard picture.

Our pick

Organic Textiles

My Green Mattress Kiwi Organic Mattress – Certified Organic

PFAS grade

A 100/100

Overall grade

B 84/100

Verdict

Buy

Hazard flags

⚑ 4

Material

Organic cotton, wool, natural latex

Confidence

72%

PossibleFlame retardant chemicals (unlabeled)

PossibleFormaldehyde in adhesives or finishes

PossibleLatex protein allergies

Why this gradeBuy

Serta

iSeries NXG 13.5" Hybrid Mattress 3500

PFAS grade

C 75/100

Overall grade

F 53/100

Verdict

Buy with care

Hazard flags

⚑ 4

Material

foam core, fabric cover (composition unspecified by brand)

Confidence

45%

PossibleVOC off-gassing (polyurethane foam)

PossibleFlame retardant residues (type unknown)

PossibleFabric cover composition and durability

Why this gradeBuy

Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →

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