We use organic cotton, European linen, and hemp canvas. That is the entire list. Here is why each one matters and why nothing synthetic will ever appear in a Sanctum Cloth garment.
Most clothing brands use synthetics because they are cheap and technically easy to work with. Polyester is 70% of global fibre production. It is derived from petroleum. It does not breathe. It does not biodegrade. It sheds microplastics in every wash cycle that end up in waterways, soil, and food chains.
We made a different choice. Not as a marketing angle. As a hard operational rule.
No Synthetics. No Exceptions. No Blends.Global Organic Textile Standard (GOTS) Certified
GOTS CertifiedCotton is the most familiar natural fibre in the world, but conventional cotton production is one of the most chemically intensive agricultural industries on the planet. It accounts for roughly 10% of global pesticide use and 25% of insecticide use despite covering only 2.5% of farmland.
GOTS stands for Global Organic Textile Standard. It is the world's leading processing standard for organic fibres, and it covers the entire supply chain: farming practices, processing, dyeing, finishing, and labour conditions at every facility in the chain. Unlike brands that self-certify "organic," GOTS certification is independently audited by third-party organisations.
The result is cotton that was grown without synthetic pesticides, processed without toxic dyes, and handled by workers in verified conditions. It is softer than conventional cotton. It breathes better. And it ages well.
OEKO-TEX Certified. Flax grown in Western Europe.
OEKO-TEX 100Humans have worn linen for 36,000 years. It was found in a prehistoric cave in Georgia. Ancient Egyptians used it for burial shrouds and everyday clothing. Roman soldiers wore it under armour. It is the oldest textile fibre we know of, and it has never gone away because nothing synthetic has successfully replaced what it does.
Our linen is sourced from flax grown in Western Europe, primarily Belgium, France, and the Netherlands, where the cool, damp maritime climate produces flax with longer, stronger fibres than varieties grown in other regions. European linen production is also significantly more water-efficient than cotton: flax grows almost entirely on rainwater with no irrigation required.
Linen is hollow at the fibre level, which is why it manages heat so effectively. It transfers thermal energy away from the body faster than almost any other fabric. It is naturally antibacterial. And unlike cotton, which softens and then plateaus, linen gets more beautiful the more it is used. The texture mellows. The drape improves. A well-worn linen piece develops a character that cannot be manufactured.
The strongest natural fibre. Certified organic.
Certified OrganicHemp was the dominant fibre in global textile production for thousands of years before the 20th century. The word "canvas" derives from the Latin "cannabis." Sails, rope, paper, and work-wear were all made from hemp because of its exceptional strength and durability. It was displaced by cotton as industrialisation made cotton cheaper, and then almost entirely eliminated by synthetic fibres in the second half of the 20th century.
Hemp fibre is stronger than cotton by weight. It has natural UV resistance. It is inherently antimicrobial, which means it resists odour without chemical treatment. Hemp requires approximately 50% less water to grow than conventional cotton and needs no pesticides because it is naturally pest-resistant. It also improves soil health through phytoremediation, drawing toxins out of the soil as it grows.
Hemp canvas softens significantly with wear and wash. A new hemp garment has structure and body. After a season of use, it becomes supple and conformed to your shape. After two seasons, it is something no new garment can replicate. It then biodegrades completely with no microplastic residue.
A direct comparison of what natural fibres do versus synthetic alternatives.
| Property | Organic Cotton | European Linen | Hemp Canvas | Polyester | Nylon |
|---|---|---|---|---|---|
| Breathability | |||||
| Biodegradable | |||||
| No microplastics | |||||
| Improves with age | |||||
| Thermally regulating | |||||
| Chemical-free | |||||
| Petroleum-derived |
First drop coming. Get early access before we go public.