Compare Kids Mattresses
My Green Mattress Kiwi Organic Mattress (Twin) scores higher on safety - here's why.
R3 scored the Birch Kids Natural Mattress 8.8/10 and the My Green Mattress Kiwi Organic Mattress (Twin) 10.0/10 on the same kids mattresses scoring system, weighing safety, efficacy, and usability. The My Green Mattress Kiwi Organic Mattress (Twin) comes out ahead, led by its safety score (10.0/10 vs 8.8/10).
The most important dimensions, side by side.
See which one actually scores higher — and why
Free account unlocks full safety scores, spec-by-spec breakdown, and the R3 verdict on Birch Kids Natural Mattress vs My Green Mattress Kiwi Organic Mattress (Twin).
Unlock the full Birch Kids Natural Mattress vs My Green Mattress Kiwi Organic Mattress (Twin) breakdown
Free account unlocks all safety scores, complete spec comparison, scoring rationale, and the R3 verdict on which one to buy.
Everything you need to make the call - who each one is for, and who should skip it.
Go for it if you...
You want organic latex and a flip-it firmness option
You are comfortable with a brand that discloses most, not all, of its build
You want GREENGUARD Gold emissions testing without paying the top-tier organic price
You want a fully certified-organic twin without paying the all-latex premium
Avoiding fiberglass, polyurethane foam and added flame retardants is your priority
You are comfortable adding a separate waterproof protector
The main thing to know
A clean organic-latex mattress with a natural-wool fire barrier, GREENGUARD Gold, and a handy flippable firm-and-soft design. What keeps it just below the top picks is disclosure, not materials: the brand doesn't say what adhesives hold it together, and its cotton and wool aren't certified organic the way its latex is.
This is about as clean as a children's mattress gets: organic wool in place of fiberglass, organic latex and coils in place of memory foam, no glues, and four independent certifications backing it up. The one thing to know before you buy is that the cover is not waterproof, so plan on adding an organic protector pad for spills and accidents.
Skip this if you...
You want every material third-party certified
You need a built-in waterproof surface
You need a built-in waterproof or wipe-clean surface and do not want a separate pad
You want an all-natural-latex feel rather than a latex-over-coils hybrid
Neither of these quite what you're looking for?
I've reviewed all Kids Mattresses options at every price pointEvery Kids Mattresses in our database is scored using R3's deterministic scoring system - the same inputs always produce the same score. For this comparison, we evaluated Birch and My Green Mattress across 2 independent criteria: Safety (94%), Efficacy (5%). No sponsored rankings. No paid placements.
Straight answers - no sponsored content, no filler.
I'd start with My Green Mattress My Green Mattress Kiwi Organic Mattress (Twin) - it scored 10.0/10 overall in our scoring system. Safety is our top-weighted scoring pillar, followed by efficacy. Check which pillar matters most to your family and compare those specific scores.
R3 uses a deterministic scoring system - the same inputs always produce the same score. We evaluate each Kids Mattresses across Safety, Efficacy using independently verified data. No sponsored rankings. No paid placements. Every score is fully reproducible.
Not necessarily. The overall score reflects how we weight those three pillars, but your priorities may differ. If you care most about safety, compare the safety scores directly. If budget drives your decision, the prices tell a clearer story. The "right" pick is the one that matches what matters most to your family.
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