90.5%Plant
By the numbers
The smart read on Sustain by Kat
Fibre class
Recorded90.5%
of recorded textile styles are plant-fibre styles
Catalogue scanned
Listing data74 eligible styles recorded · 1 non-textile items excluded
Sourcing
transparency
Partialtransparency
3/5
Tier 1 only
Sustain by Kat composition
74 stylesPlant90.5%
Animal9.5%
Synthetic0%
Semi-synth0%
Every entry, recorded
Every recorded entry, with its finding
74 styles90.5% Plant2026-09-05 checked74 on record
Plant 90.5%Animal 9.5%Synthetic 0%Semi-synth 0%
74 styles
| # | Style | Stated composition | Class |
|---|---|---|---|
| 001 | Organic Indigo Leaf Dyed Jean Shorts | cotton | Plant |
| 002 | Specialty Organic Cotton / Natural Rubber Elastic | cotton | Plant |
| 003 | Organic Plant-Dyed Fabric - Multicolor Stripes | cotton | Plant |
| 004 | Organic Plant-Dyed Fabric - Lavender Houndstooth | cotton | Plant |
| 005 | Organic Plant-Dyed Fabric - Charcoal Gray | cotton | Plant |
| 006 | Organic Plant-Dyed Fabric - Green Squares | cotton | Plant |
| 007 | Organic Plant-Dyed Fabric - Indigo Plaid | cotton | Plant |
| 008 | Organic Plant-Dyed Fabric - Indigo Stripes | cotton | Plant |
| 009 | Indigo Organic Cotton/Linen Tea Towels | linen, cotton | Plant |
| 010 | Indigo Organic Cotton/Linen Dish Towels | linen, cotton | Plant |
| 011 | Indigo Organic Cotton/Linen Napkins | linen, cotton | Plant |
| 012 | Mini Plant-dyed Silk Scrunchies | silk | Animal |
| 013 | Plant-dyed Organic Sewing Thread | cotton | Plant |
| 014 | Plant-dyed Scarf | cotton | Plant |
| 015 | Plant-dyed Scarf | silk | Animal |
| 016 | Plant-dyed Scarf | cotton | Plant |
| 017 | Plant-dyed Scarf | cotton | Plant |
| 018 | Plant-dyed Scarf | cotton | Plant |
| 019 | Plant-dyed Scarf | cotton | Plant |
| 020 | Plant-dyed Scarf | cotton | Plant |
| 021 | Plant-dyed Scarf | cotton | Plant |
| 022 | Plant-dyed Scarf | cotton | Plant |
| 023 | Kids Organic Plant-dyed Shibori Dress | cotton | Plant |
| 024 | Plant-dyed Silk Scrunchies | silk | Animal |
| 025 | Kids Organic Plant-dyed Shibori Dress | cotton | Plant |
| 026 | Kids Shibori Tee | cotton | Plant |
| 027 | Kids Organic Plant-dyed Shibori Dress | cotton | Plant |
| 028 | Kids Shibori Purple Organic Sweatshirt | cotton | Plant |
| 029 | Undyed Organic Cotton Thread | cotton | Plant |
| 030 | Plant-dyed Organic Cotton Thread | cotton | Plant |
| 031 | Kids Starry Night Organic Sweatshirt | cotton | Plant |
| 032 | Undyed Organic PJ Shorts | cotton | Plant |
| 033 | Plant-dyed Linen Tee | linen, cotton | Plant |
| 034 | Plant-dyed Racerback | cotton | Plant |
| 035 | California Grown Plant-dyed Linen Tee | linen, cotton | Plant |
| 036 | Organic Silk Eye Mask | silk | Animal |
| 037 | Organic Linen Handkerchiefs | linen | Plant |
| 038 | Plant-dyed Tunic | cotton | Plant |
| 039 | Naturally-dyed Colorblock Top | cotton | Plant |
| 040 | Organic Cotton / Natural Rubber Elastic (Various Widths) | cotton | Plant |
| 041 | Ayurvedic Cami | cotton | Plant |
| 042 | Kids Organic Colorgrown Leggings | cotton | Plant |
| 043 | Plant-dyed Muscles & Lace | cotton | Plant |
| 044 | Kids Organic Plant-dyed Leggings | cotton | Plant |
| 045 | Christmas Tree Long Sleeve Onesie | cotton | Plant |
| 046 | Snowman Long Sleeve Onesie | cotton | Plant |
| 047 | Plant-dyed Silk Hair Tie Minis | silk, rubber, elastic | Animal |
| 048 | Organic Weld Seeds | down | Animal |
| 049 | Avocado-dyed Shibori Tee | cotton | Plant |
| 050 | Kids Organic Plant-dyed Shibori Dress | cotton | Plant |
| 051 | Kids Organic Plant-dyed Shibori Dress | cotton | Plant |
| 052 | Undyed Organic Makeup Remover Pads | cotton | Plant |
| 053 | Organic Indigo-Dyed Denim Fabric | cotton | Plant |
| 054 | Organic Colorgrown Cotton Fabric | cotton | Plant |
| 055 | Organic Colorgrown Cotton Fabric | cotton | Plant |
| 056 | Organic Cotton Fabric | cotton | Plant |
| 057 | Kids Sunburst Tee | cotton | Plant |
| 058 | Indigo Swirl Kids Long Sleeve | cotton | Plant |
| 059 | Organic Cotton Lace | cotton | Plant |
| 060 | Organic Cotton Cord | cotton | Plant |
| 061 | Plant-dyed Silk Hair Ties | silk | Animal |
| 062 | Plant-dyed Scarf | cotton | Plant |
| 063 | Plant-dyed Shibori Tee | cotton | Plant |
| 064 | Undyed Organic PJ Cami | cotton | Plant |
| 065 | Plant-dyed Harem Pants | cotton, rubber, elastic | Plant |
| 066 | Snow White | cotton | Plant |
| 067 | Oh My Deer | cotton | Plant |
| 068 | Undyed Linen Tee | linen, cotton | Plant |
| 069 | La La Lace Tank | cotton | Plant |
| 070 | Colorgrown Cotton Tee | cotton | Plant |
| 071 | Written with Walnuts Classic Racerback | cotton | Plant |
| 072 | Undyed Organic Racerback | cotton | Plant |
| 073 | Ayurvedically-dyed Shorts | cotton | Plant |
| 074 | Ayurvedically-dyed Indigo | cotton | Plant |
Instant fibre check
free · no loginChoose a fibre to see its class and whether it appears in Sustain by Kat’s recorded styles.
Plant · natural
Animal
Synthetic
Semi-synthetic
Elastane
A stretch synthetic fibre, also called spandex or Lycra.
Not found in any of the 74 recorded styles. This describes the current listing record, not unscanned products.
Checked against all 74 recorded styles in this listing.
Your recorded-material checks
Choose what you want to inspect in Sustain by Kat’s record. This filters recorded findings; it does not assess clinical safety.
Recorded findings for Sustain by Kat
Showing 5 of 74 recorded entries. Select a class to filter.
- Organic Indigo Leaf Dyed Jean Shorts · cotton
- Specialty Organic Cotton / Natural Rubber Elastic · cotton
- Organic Plant-Dyed Fabric - Multicolor Stripes · cotton
- Organic Plant-Dyed Fabric - Lavender Houndstooth · cotton
- Organic Plant-Dyed Fabric - Charcoal Gray · cotton
Selections apply to this panel only.
The story
About Sustain by Kat
Owner · Kat Quigley is the owner of Sustain by Kat.
Sustain by Kat, a small Los Angeles brand founded in 2016, uses GOTS certified organic cotton and 100% plant-based natural dyes, and states every garment component (down to elastic and thread) is organic. Good On You rates it ‘Good’ (Planet 4/5, People 3/5, Animals 4/5) and notes it partly traces its supply chain including the final and some second production stages. However, Sustain by Kat does not publish an aggregate supplier breakdown or a named factory list, and there is no evidence of living-wage assurance.
MaterialsSustain by Kat states its fibres are 100% natural and organic, with cotton that is 100% organic from the fabric to the labels to the thread, and linen that is 100% natural and organic made…
SourcingSustain by Kat sources high quality organic fabrics and natural dyes that are all locally manufactured in Los Angeles, with the remaining collections locally made and naturally dyed by ethical companies in the U.S. The…
End of lifeRather than petroleum-based dyes, Sustain by Kat colours its natural fibres with plant-based natural dyes including pomegranate peels, oak galls, rhubarb, myrobalan, madder root, fusticwood, logwood and indigo leaf.
Details
Brand NameSustain by Kat
CountryUnited States
Websitehttps://sustainbykat.com
OwnerKat Quigley is the owner of Sustain by Kat.
Instagramhttps://www.instagram.com/sustainbykat/
Certifications
GOTSSustain by Kat is not GOTS certified as a company, but uses GOTS certified organic cotton.
VeganSustain by Kat clothing brand is a vegan clothing brand.
Who is behind it
Woman OwnedSustain by Kat clothing brand is a woman owned clothing brand.
Verification statusprovisional
Scan coverage
Products in catalogue77
Products read74
Catalogue read %96.1
How it was readRecalculated SKU by SKU from the saved direct-scan CSV Band column. Plant means the complete SKU was classified as 100% plant fibre; all other textile bands fail the plant test. Unresolved and excluded products are named separately.
Sources checkedSaved direct SKU scan CSV: Sustain by Kat.csv. Row-level URLs retained: 0 of 78.
Last checked2026-09-05
Straight talk
Where Sustain by Kat isn’t perfect
SourcingWhat the record says
No public supplier list; cotton/linen farm origins not disclosed; small brand with limited second-tier traceability; no evidence of living wages (per Good On You).
CoverageWhat the record says
These named products were retained in the catalogue denominator but excluded from the observed percentage because the saved direct scan did not resolve a complete composition.
Confirmed at the source
What we read and checked
Read the evidence and its qualifications alongside each finding.
Sustain by Kat · listing photograph
74 styles
Recorded findings available in this listing
Recorded data
Material evidence across 78 catalogue records
7Linen mentioned
66Cotton mentioned
4Material not stated
Recorded mentions can overlap when one style uses more than one material.
At a glance
Recorded features & ownership
Recorded values, with their qualifications retained.
Recorded composition
Plant90.5%
Animal9.5%
Synthetic0%
Semi-synth0%
GOTS (brand-stated, not registry-confirmed) Brand-attestedNot in the official GOTS database (checked 14 August 2026); GOTS-certified organic cotton via small suppliers (material level). Brand-attested.OEKO-TEX® Standard 100 Brand-attestedSustain by Kat clothing brand does not maintain OEKO-TEX® Standard 100 certification.1% for the planet Brand-attestedSustain by Kat clothing brand is not a member of 1% for the Planet.Vegan Brand-attestedSustain by Kat clothing brand is a vegan clothing brand.
Materials
Sustain by Kat states its fibres are 100% natural and organic, with cotton that is 100% organic from the fabric to the labels to the thread, and linen that is 100% natural and organic made from flax plants. The Sustain by Kat…
Cotton
GOTS certified organic cotton (also uses linen, with hemp planned); every component organic (fabric, elastic, cotton sewing thread)
Manufacturing
Not disclosed (small brand; final production in low-risk or certified facilities per Good On You)
End of life
Rather than petroleum-based dyes, Sustain by Kat colours its natural fibres with plant-based natural dyes including pomegranate peels, oak galls, rhubarb, myrobalan, madder root, fusticwood, logwood and indigo leaf.
Certifications & claims
What the sources support
GOTS (brand-stated, not registry-confirmed)Brand-attested
Not in the official GOTS database (checked 14 August 2026); GOTS-certified organic cotton via small suppliers (material level). Brand-attested. · Checked 2026-08-14
OEKO-TEX® Standard 100Brand-attested
Sustain by Kat clothing brand does not maintain OEKO-TEX® Standard 100 certification.
1% for the planetBrand-attested
Sustain by Kat clothing brand is not a member of 1% for the Planet.
VeganBrand-attested
Sustain by Kat clothing brand is a vegan clothing brand.
After use
Care, repair & end of life
Take-back or repair
0
Resale
0
The full record
Every field we hold on Sustain by Kat
The field values retain the source’s wording and qualifications. A preview is shown where the full report is not available to your account.
Certifications 6 fields
GOTSSustain by Kat is not GOTS certified as a company, but uses GOTS certified organic cotton.
OEKO-TEX® Standard 100Sustain by Kat clothing brand does not maintain OEKO-TEX® Standard 100 certification.
Other CertificationsSustain by Kat clothing brand does not have any other sustainability certifications.
VeganSustain by Kat clothing brand is a vegan clothing brand.
Factory certificationsGOTS (materials); Good On You notes final stage in low-risk or certified facilities
GOTS held byna
Sourcing & supply chain 12 fields
Cotton. Country of originNot disclosed by country
Cotton. Named farm / region / co-opNot disclosed
Wool. Origin + farm + mulesing statusNot applicable (plant-fibre focused)
Other materials. OriginOrganic linen; 100% plant-based natural dyes
Spinning mill. Name + countryNot disclosed
Weaving / knitting mill. Name + countryNot disclosed
Cut-and-sew / assembly factory NAMENot disclosed (small brand; final production in low-risk or certified facilities per Good On You)
Factory. City + countryBased in Los Angeles, USA; much of final production in low-risk countries or certified facilities
Publishes a factory list0
Factory-list / transparency URLhttps://directory.goodonyou.eco/brand/sustain-by-kat
Traceability levelTier 1 only
Supplier disclosurePartial
Scan coverage & transparency 10 fields
Products in catalogue77
Products read74
Catalogue read %96.1
How it was readRecalculated SKU by SKU from the saved direct-scan CSV Band column. Plant means the complete SKU was classified as 100% plant fibre; all other textile bands fail the plant test. Unresolved and excluded products are named separately.
Verification statusprovisional
Sources checkedSaved direct SKU scan CSV: Sustain by Kat.csv. Row-level URLs retained: 0 of 78.
Last checked2026-09-05
Verified byHTT research (brand policy pages)
Clean & Safe: last checked2026-07-29
How this date was establishedverified
Possible flags 4 fields
Why no scoreProvisional direct saved-SKU scan: 74 of 77 in-scope rows classified (96.1% coverage), 3 unresolved. Possible fully plant-SKU range 85.7-89.6% remains in score band 3/5. The saved export retains 0 row-level source URLs; this is not full-catalogue verified.
Sourcing red flagsNo public supplier list; cotton/linen farm origins not disclosed; small brand with limited second-tier traceability; no evidence of living wages (per Good On You).
Possible flags
Plant-dyed Silk Hair Ties Sustain by KatThe description mentions silk, which is not in the stated composition (likely a trim, lining or care note); it is not counted in the score.
Plant-dyed Silk Hair Tie Minis Sustain by KatThe description mentions silk, which is not in the stated composition (likely a trim, lining or care note); it is not counted in the score.
Organic Silk Eye Mask Sustain by KatThe description mentions silk, which is not in the stated composition (likely a trim, lining or care note); it is not counted in the score.
Flag sources
Plant-dyed Silk Hair Ties Sustain by KatView source ↗
Plant-dyed Silk Hair Tie Minis Sustain by KatView source ↗
Organic Silk Eye Mask Sustain by KatView source ↗
Other recorded details 56 fields
Brand NameSustain by Kat
ExcerptIs Sustain by Kat a sustainable clothing brand? See the real fibre breakdown, plant, animal or synthetic, before you buy.
Buy Linkhttps://sustainbykat.com
LocationSustain by Kat are located in Massachusetts in United States.
CountryUnited States
Websitehttps://sustainbykat.com
Ethicshttps://sustainbykat.com/pages/completely-natural-down-to-the-thread
OwnerKat Quigley is the owner of Sustain by Kat.
Owner Linkhttps://www.etsy.com/shop/SustainbyKat#about
Contact Emailinfo@sustainbykat.com
Instagramhttps://www.instagram.com/sustainbykat/
POCSustain by Kat clothing brand ownership is not identified as people of colour.
LGBTSustain by Kat clothing brand ownership is not identified as LGBTQ+.
Woman OwnedSustain by Kat clothing brand is a woman owned clothing brand.
1% for the planetSustain by Kat clothing brand is not a member of 1% for the Planet.
Feature 1Sustain by Kat states its fibres are 100% natural and organic, with cotton that is 100% organic from the fabric to the labels to the thread, and linen that is 100% natural and organic made from flax plants. The Sustain by Kat range also includes plant-dyed silk pieces such as silk scrunchies, hair ties and an Organic Silk Eye Mask.
Feature 2Sustain by Kat sources high quality organic fabrics and natural dyes that are all locally manufactured in Los Angeles, with the remaining collections locally made and naturally dyed by ethical companies in the U.S. The Ayurvedic collection from Sustain by Kat supports small, marginalised communities in India by helping provide fair wages and safe working conditions.
Feature 3Rather than petroleum-based dyes, Sustain by Kat colours its natural fibres with plant-based natural dyes including pomegranate peels, oak galls, rhubarb, myrobalan, madder root, fusticwood, logwood and indigo leaf.
ShippingShipping is not free at Sustain by Kat, with charges based on the actual carrier costs and typically between $3 and $10 for orders within the U.S. Dispatch of your Sustain by Kat pieces takes 1 to 4 business days as all orders are processed within this window.
Shipping InternationalSustain by Kat offers international shipping worldwide, with international charges typically between $15 and $30.
Shipping NotesAll Sustain by Kat orders are processed within 1 to 4 business days.
Fibre Breakdown(97.1%) 100% plant; Plant 97%; Animal 3% (70 of 76 styles read)
Unresolved products3
What this meansThese named products were retained in the catalogue denominator but excluded from the observed percentage because the saved direct scan did not resolve a complete composition.
Unresolved products (with links)Plant-Based Lake Pigments
Lavender & Chamomile Dyed Shorts
Lavender & Chamomile Dyed Cami
Excluded items1
Why excludedThese named non-textile products were excluded from the textile denominator.
Excluded itemsGift Card
Products found78
Products with a fibre list74
Products with no fibre list3
Brand site readablenot retained in CSV
Cotton. Type / certificationGOTS certified organic cotton (also uses linen, with hemp planned); every component organic (fabric, elastic, cotton sewing thread)
Polyester. Virgin or recycled + sourceNot applicable (avoids synthetic blends; prioritises recyclable single-fibre textiles)
Viscose / bamboo. Wood-pulp source + FSCNot applicable
Dye house. Name + countryIn-house/plant-dyeing described (natural dyes, dye wastewater reused to irrigate dye crops); specific facility not named
Sourcing transparency score (1-5)3
Supply-chain summarySustain by Kat, a small Los Angeles brand founded in 2016, uses GOTS certified organic cotton and 100% plant-based natural dyes, and states every garment component (down to elastic and thread) is organic. Good On You rates it ‘Good’ (Planet 4/5, People 3/5, Animals 4/5) and notes it partly traces its supply chain including the final and some second production stages. However, Sustain by Kat does not publish an aggregate supplier breakdown or a named factory list, and there is no evidence of living-wage assurance.
Where the sourcing info was verifiedhttps://directory.goodonyou.eco/brand/sustain-by-kat
https://goodonyou.eco/sustain-by-kat/
https://sustainbykat.com/
Dye processLow-impact / GOTS-certified dyes
Dye process sourcehttps://sustainbykat.com
Overall: where this info comes fromIndependently verified
PFAS / durable water repellentPFAS-free (verified)
PFAS sourcehttps://sustainbykat.com/
Take-back / repair scheme0
Resale / resell programme0
Plant Fibre % (natural)89.2
Total Styles Scanned78
Sustainability Score (1-5)3
Score LabelPart natural
Claim sourcesClaim: GOTS (brand-stated, not registry-confirmed) · Source Type: brand_website · Held By: na · Quote: Not in the official GOTS database (checked 14 August 2026); GOTS-certified organic cotton via small suppliers (material level). Brand-attested. · Verified Date: 2026-08-14
Scan noteProvisional direct saved-SKU scan: 74 of 77 in-scope rows classified (96.1% coverage), 3 unresolved. Possible fully plant-SKU range 85.7-89.6% remains in score band 3/5. The saved export retains 0 row-level source URLs; this is not full-catalogue verified.
Natural ingredient share97.1
Full catalogue scanno
Catalogue-scan qualificationProvisional direct saved-SKU scan: 74 of 77 in-scope rows classified (96.1% coverage), 3 unresolved. Possible fully plant-SKU range 85.7-89.6% remains in score band 3/5. The saved export retains 0 row-level source URLs; this is not full-catalogue verified.
Scan method versionThrone Standard direct CSV recalculation 2026.09
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Independent directory evidence
How Sustain by Kat compares across published ratings
These results are not interchangeable scores. Each source stays in its own published scale, with its actual scope shown beside it.
| Directory | Published result | What it measures or reports | Source date |
|---|---|---|---|
| Good On You ↗ | Good · 4/5 | Planet: Good · People: It's a start · Animals: Good | 15 Jun 2026Captured 24 Aug 2026 |
| The Throne Scan | 3/5 · Part natural | 74 eligible styles checked for stated fibre composition; 90.5% plant among recorded textile styles | 5 Sep 2026 |
External results are quoted from the linked directory record and are never converted into the Throne Scan scale.
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Last checked 2026-09-05 · verified · Ask us to rescan this listing