Sustainability

opi&max started as a family project: socks that we'd want our own kids to wear, made the way we'd want them made. Everything below flows from that.

Our materials

Our socks are made primarily from GOTS-certified organic cotton. The "organic" part means no synthetic pesticides, no defoliants, and no GMO seeds. The "certified" part means an independent body audits the whole chain — from cotton field to dye house to knitter.

We blend a small amount of elastane into the cuff for fit. There's no fully sustainable elastane on the market yet, so we use as little as possible (3–7% depending on the model).

Our production partner

We work with one family-run knitter in Turkey. We've been with them since the start. They are GOTS-audited, pay fair wages above the regional textile average, and run on a mix of grid and on-site solar power.

We visit twice a year. The conversations we have with the team there shape what we make.

Dyes & finishing

All colour comes from GOTS-approved low-impact dyes. No heavy metals, no AZO dyes, no formaldehyde finish. The water that leaves the dye house is treated on-site before discharge.

Packaging

Single-sock sleeves are FSC-certified recycled paper. Outer mailers are 100% recycled polythene that goes back into the recycling stream after use. We don't use plastic blister packs.

What we still need to fix

We're honest about this: elastane has no real circular alternative yet, our shipping footprint is real, and our cotton has to travel from field to mill. We work on each of these every year. Progress notes go in our annual brand update.

Certifications

  • GOTS — Global Organic Textile Standard
  • OEKO-TEX Standard 100 — every yarn we use
  • FSC — packaging paper

Read more about what GOTS means in practice.