What Holds It Together: A Look at Our Hardware + Zippers

What Holds It Together: A Look at Our Hardware + Zippers

We believe hardware is part of the architecture of every bag, not an afterthought. The way something closes, fastens, or glides should feel intentional, sculptural, and built to last.

Zippers: LAMPO

Starting in 2026, all of our bags will feature LAMPO zippers, regarded as some of the finest in the world.

  • Precision-manufactured in Italy, with full in-house control from raw materials to finishing

  • Engineered for smoothness, strength, and long-term durability

  • REACH compliant and produced with non-toxic dyeing processes and closed-loop water systems

LAMPO zippers are used by some of the most respected fashion houses globally. We chose them not for convenience, but because they align with our values: craftsmanship, quality, and longevity.

Signature Clasps: Cast in Italy

Our signature oversized o-ring clasps are cast and finished in small batches in Italy.

  • Made from ZAMAK 3, a high-quality, fully recyclable zinc alloy that’s nickel- and lead-free

  • Produced in ISO 14001-certified facilities that prioritize sustainability: solar power, closed-loop water filtration, and reduced emissions through local material sourcing

  • 97% of materials are sourced locally within Italy, keeping the environmental impact of logistics to a minimum

Additional Hardware: Long-Term Partners in Asia

For smaller components like D-rings, rivets, magnetic closures, and base studs — we work with a small group of trusted partners in Asia who specialize in zinc casting for fashion accessories.

What we’ve verified:

  • All components are made from ZAMAK 3, with third-party test reports confirming alloy composition and absence of harmful substances

  • REACH and RoHS compliance verified through recent SGS testing (2025)

  • No lead, mercury, cadmium, or chromium VI detected

  • Manufacturers confirm that all zinc alloy waste is recycled and reused in-house

  • All workers are covered under national labor laws, with documented social and medical insurance

Why It Matters

When you carry a SONYA LEE piece, you’re not just holding leather, you’re holding layers of material choices and manufacturing values. Each piece of hardware is selected for how it looks, how it performs, and how it ages.

We believe luxury should feel good in every sense, and we’re committed to sourcing that holds up to that standard.