RWS Certified Wool Suits
Responsibly sourced Merino wool, made in Italy
What it means
Transparent sourcing, every thread.
Sustainable garment and fabric making sits at the core of Ron Tomson's values. We work with certified Italian mills and internationally recognized standards bodies so that the wool in your suit, the velvet in your tuxedo, the cotton in your shirt, and the rubber on your sneakers can all be traced back to their source.
Wool
100% RWS-certified on every suit, tuxedo, and jacket.
Cotton
OEKO-TEX Standard 100 dress shirts and formal wear.
Velvet
ZDHC + BCI Italian velvet from Redaelli Velluti.
Our Certifications
Six standards we measure against
International, independently audited programs for fibers, chemicals, and working conditions.
Responsible Wool Standard
A voluntary global standard that protects sheep welfare and the land they graze on. Ron Tomson uses 100% RWS wool for all suits, tuxedos, and jackets.
Shop Responsible Wool →
OEKO-TEX Standard 100
Class 1 certification — the strictest level — verifies every fabric component is free from azo dyes, formaldehyde, cadmium, nickel, and other harmful substances. Our cotton dress shirts and wool suits carry the mark.
Shop Dress Shirts →
ZDHC
Zero Discharge of Hazardous Chemicals — a coalition of leading textile brands committed to eliminating harmful chemicals from the production stream. Our Italian velvet jackets and tuxedos are sourced from ZDHC member Redaelli Velluti.
Better Cotton Initiative
The world's largest cotton sustainability program — better for the farmers who grow it, better for the soil, better for the future. Our cotton velvet comes from BCI-compliant mill Redaelli Velluti.
Global Recycle Standard
Third-party verification for recycled content, chain of custody, and chemical restrictions. Our 100% recycled-fiber capsule is GRS certified.
Shop Recycled Fiber →
Higg Index
Developed by the Sustainable Apparel Coalition, the Higg Facility Environmental Index measures water use, carbon emissions, and labor conditions. Our wool fabrics are sourced from Higg-assessed mills.
Where it comes from
Made with the best in Italy.
Most of our garments carry the fingerprint of a named Italian supplier — mills and workshops with centuries of heritage that hold the certifications to prove their integrity.
Est. 1663 · Biella, Italy
Vitale Barberis Canonico
One of the oldest textile mills in the world, fifty miles north of Turin in the Biella region — the heart of Italian wool. Holds the Responsible Wool Standard, Global Recycled Standard, and Woolmark certifications.
Our Super 110's suits and tuxedos use fabrics woven by Vitale Barberis Canonico.
Lake Como · Lombardy, Italy
Redaelli Velluti
A family-run mill on the shores of Lake Como, with a distinguished history in the European textile industry. Active member of both ZDHC and the Better Cotton Initiative.
All of our Italian velvet jackets and tuxedos are cut from Redaelli Velluti cloth.
Other named partners
The rest of the paper trail
Zippers, soles, and trims — every component has a supplier we can name.
YKK Zippers
Founded 1934, Japan. YKK controls every step of zipper manufacturing in-house and holds a Higg Facility Environmental Module score and OEKO-TEX Standard 100 certification. Used on all our leather, garments, and footwear.
Vibram Soles
Italian rubber outsole manufacturer based in Albizzate. Registered with REACH — the European Union's chemical regulation system — which controls chemical production, use, and environmental impact. Found on our Neoprene Racers II.
Margom SPA
100% made-in-Italy rubber soles and heels. Margom offers sustainable product lines produced with recycled rubber compounds reclaimed from manufacturing discards. Found on our leather court sneakers.
GRS 100% Recycled Fiber
Made from 100% recycled fiber, GRS certified
The commitment
Better fabrics. Named partners.
No mystery.
We believe customers deserve to know what they're wearing and where it came from. If any material on a Ron Tomson product isn't explained on this page, email us and we'll tell you.