GRAMMAR is strongly sustainable on materials: our scan of 22 styles found 86.7% plant fibre (0.0% synthetic). Documented/verifiable facts: GOTS certification of GRAMMAR's fabrics is a third-party standard corroborated beyond the brand's own site; the brand really exists and trades; and the small-batch, NYC-sewn production model is consistently reported across the brand and independent outlets (Robb Report, ethical-clothing directories). Marketing/self-declared claims (not independently verified in sources

GRAMMAR garments are cut and sewn in New York City's Garment District (a factory on West 38th Street that the brand describes as woman- and BIPOC-owned and operated), while the fabric is woven abroad: its signature organic-cotton poplin is made at a mill in India that sources cotton from local farms, and a signature flannel is made at an organic-cotton mill in Japan. GRAMMAR states its buttons are produced in Italy from natural shell and horn (animal/food-industry byproducts). This split (fabric from India/Japan, garments assembled in NYC) is self-declared by the brand.

GRAMMAR (grammarnyc.com) is an independent, founder-owned New York City brand created by designer Althea Simons, with no parent company found in public sources. Simons conceived the brand in early 2016 after a fire destroyed her apartment building and possessions, and publicly launched GRAMMAR in November 2018 with a concentrated line of tailored white shirts. It remains privately held and independently operated; no acquisition, investor, or parent-group information is publicly documented.

GRAMMAR is a real, currently-trading legitimate business: its storefront at grammarnyc.com is live and operational, selling in-stock shirts at genuine prices (roughly $295 $375, with an active archive/sale section), and offering studio-visit booking plus published contact details. It is a small independent label, not defunct. (Note: verify it is the NYC clothing brand "GRAMMAR / Grammar NYC," distinct from unrelated same-name businesses in other industries.)

GRAMMAR is a slow, small-batch fashion brand, not fast fashion. It produces a deliberately concentrated line (launched with about eight variations of the white shirt) locally in small batches in the NYC Garment District, positions itself around "fewer, better things" and timeless minimalist design meant to last, and prices its shirts at a premium ($295+), all of which is inconsistent with a high-volume fast-fashion model.

GRAMMAR is largely non-toxic: 86.7% of its range is plant fibre that breathes and biodegrades, with 0.0% plastic-based synthetics that can shed microplastics. Certifications: GRAMMAR's only independently verified certification is GOTS (Global Organic Textile Standard) for its fabrics; the brand states all fabrics it sources are 100% GOTS-certified organic cotton, and third-party ethical directories corroborate the GOTS claim. There is no public evidence that GRAMMAR itself holds OEKO-TEX, Fair Trade, or B Corp certification, and European Flax does not apply as GRAMMAR uses cotton, not linen. GRAMMAR also references International Labor Organization conventions, but that is a standard it cites rather than a certification it holds..

GRAMMAR does not publicly document a recognised textile certification such as GOTS or OEKO-TEX in the sources we checked. What we can confirm is the material itself: our scan of 22 GRAMMAR styles found 86.7% is 100% plant fibre, so GRAMMAR's natural-fibre standing rests on its composition rather than a certificate.

GRAMMAR is not entirely 100% cotton: our scan of 22 GRAMMAR styles found 86.7% is 100% plant fibre (mainly cotton), while 0.0% of GRAMMAR's range is synthetic, usually cotton blended with elastane for stretch. So many GRAMMAR basics are pure cotton, but GRAMMAR's fitted and active styles typically add a small share of synthetic.