While we source materials from mills that use certified fibres or certified processes (such as GOTS or RWS at the material level), The Slow Label itself is not certified and can therefore not disclose those material-level certifications on the product pages. We made this choice for two reasons:

1. Brand-level certifications require significant administrative resources that would increase costs without necessarily improving the quality or traceability of our garments, and
   
2. Most certifications are designed for raw materials or single, large factories — not for small brands producing across multiple specialised facilities. Several of the family-run factories we work with are not certified and do not have the financial or administrative capacity to obtain certification, despite their high standards and craftsmanship.
   

That said, we are exploring one to two targeted certifications that would allow us to certify selected best-selling products in the future. This would let us reference material-level certifications directly on our product pages and offer even clearer traceability where it provides real value.

For now, our focus remains on material documentation, responsible suppliers and transparent product-level information, rather than relying on a single label to represent our entire supply chain.

We work with mills and suppliers who can provide documentation on fibre origin, dyeing processes and certifications at the material level. This ensures traceability without overstating what a brand-level certification would imply. We select materials based on quality, longevity and impact.

Most of our collection is made from mono-materials to keep garments recyclable and reduce unnecessary blends.

When stretch is needed for comfort or function, we use Roica V550, a more responsible elastane alternative that is designed to break down faster under specific industrial conditions and has a lower environmental impact than conventional elastane.

We also switched to recycled polyester sewing thread after experiencing quality issues with natural threads. The recycled thread significantly improved durability, preventing seam breakage and extending garment life.

Over the years, we shifted from aiming for “100% natural at all costs” to prioritising responsible materials that also ensure long-term wear. In some cases, this means choosing a small amount of stretch or a synthetic component — because a garment that keeps its shape and is worn for many years has a lower footprint than a 100% natural piece that loses its structure quickly.

Our pieces are produced in small, specialist factories in Portugal, Italy and formerly also India. We maintain long-term relationships, visit regularly and choose partners for their expertise, working conditions and shared values. Each product page lists factory details.

We only create pieces with a clear, long-term purpose in a wardrobe. That means timeless silhouettes, versatile use and no one-off or special-occasion styles. A small, intentional range helps us avoid overproduction and focus on real needs.

No. We produce in small batches and keep our collection intentionally tight. This minimises leftovers and allows us to prioritise quality and responsible production.

We use higher-quality materials, produce in European factories, work in small batches and invest in responsible manufacturing. Our pricing reflects real production costs rather than high-volume manufacturing or aggressive discounting.

We share detailed information about each product, including the country of origin, material composition, type of factory (knitwear, weaving, sewing), and the roles of our suppliers, so you can clearly understand where and how your clothes were made.

We don’t publish full factory names or exact addresses because our supplier network is a core part of our business and has taken years to build. Many factories work with very small capacities, and publicly listing them could compromise those relationships or overwhelm them with requests.

That said, we maintain long-term partnerships with all our manufacturers. Our priority is to give you traceable, factual information — without exposing our partners to pressure they cannot manage.