The Comfort Series · FL-41
Halcyon Slate Black
A 22 mm bridge, the widest we cut, on a soft round oval that touches almost nothing.
Halcyon exists because of its bridge. At 22 mm it is the most open nose fit in the range, and that single number changes who the frame works for: anyone whose glasses leave marks, anyone with a low or flat bridge, anyone who cannot tolerate pressure across the top of the nose on a bad day. The round oval outline follows from that, soft-cornered and even. A 52 mm eye, 142 mm temples and a 140 mm front keep it medium, while the 43 mm lens height still gives real coverage under the pupil.
Two tints, two jobs
Two rose depths on one quiet frame
FL-41 LightLong indoor stretchesWhere the dark lens is for a bright room, this one is for the whole day. It shares the rose-band notch with FL-41 Dark and runs at a higher overall transmittance. The full spectrophotometer report is being finalized and will be published here. 100% UV400.
FL-41 DarkWhen light gets sharpThe curve dips through the blue and green bands, 13.8% at 450 nm and 12.6% at 520 nm, then lifts hard and reaches 100% above 670 nm. At 41.1% luminous transmittance it sits in Filter Category 2 and carries 100% UV protection.
All figures are single-lens spectrophotometer measurements from our own laboratory reports for this lens, tested to EN ISO 12312-1, ANSI Z80.3 and AS/NZS 1067.1. Individual response varies.
Fit
Will the Halcyon fit you?
Halcyon is medium at 140 mm across the front. Its defining measurement is the 22 mm bridge, the widest here, which suits a low or flat nose bridge and spreads contact over a larger area. If standard bridges pinch you, start with this one. The 52 mm eye is on the smaller side, so the frame reads compact despite the 43 mm lens depth. Temples are 142 mm, slightly shorter than standard, which suits a smaller head.
| Frame size | 52-22-142 |
|---|---|
| Front width | 140mm |
| Lens height | 43mm |
| Fit | Medium |
| Shape | Round oval |
| Collection | The Comfort Series |
| Lens options | FL-41 Light or Dark · zero power or prescription |
| UV protection | 100% UV400, both tints |
In the box
- Halcyon Slate Black frame in your chosen FL-41 tint
- Hard case and microfiber cleaning cloth
- Spectrophotometer report reference for your lens
- One-year frame warranty, six-month lens warranty
For all orders exceeding a value of 100USD shipping is offered for free.
Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.
Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.