MEASURED IN MICRONS.
THE MATERIAL IS THE PERFORMANCE.
Cellulose acetate — derived from natural cotton and wood pulp. Not petroleum plastic. It holds colour evenly, polishes to a clean finish, and does not become brittle over time. Sourced from Mazzucchelli, the oldest acetate supplier in Europe, established 1849.
A continuous titanium wire runs the length of each temple arm. Titanium has shape memory — it returns to its original form after deformation. This is why SENO frames stay fitted. The wire is supplied by Morel, whose material specification we specify directly.
ENGINEERED AT THE MOLECULAR LEVEL.
All sun lenses are polarized and rated UV400. Polarization eliminates reflected glare without reducing total light — relevant for driving, water, and high-altitude use. Class 3 sun protection across the full collection.
Our blue-light coating blocks wavelengths in the 380–420nm range — the portion of the visible spectrum most implicated in digital eye strain. The filter is applied to both lens surfaces. Zero colour shift at standard indoor lighting.
Applied standard to every lens in the optical collection. Reduces reflections on the rear surface that create ghost images. Applied at an optical lab grade, not a consumer retail grade.
SIX STEPS. NO SHORTCUTS.
We specify material grade at source. Acetate block, titanium wire grade, lens blank supplier.
Acetate sheets are CNC cut to within 0.1mm tolerance. Temple and front are cut separately, then barrel-drilled.
Three-barrel stainless steel hinges. Fitted with a friction-tested torque. Every hinge is tested to 5,000 open/close cycles.
Frames are barrel-tumbled in abrasive media for 48 hours to remove all machine marks. Final polish is by hand.
Lenses are cut to frame shape in-house. Polarized layers, blue-light coatings, and anti-glare applications are done in sequence.
Each frame is checked against our fitting spec: eye width ±0.5mm, bridge width ±0.3mm, temple length ±1mm.