Sleepaxa Elegan Matte Slate Blue FL-41 Migraine & Light Sensitivity Glasses

Elegan Matte Slate Blue

A softly squared front in Matte Slate Blue, the only color here that is not black, brown, gray or clear.

Slate blue is a muted, almost industrial tone, and it works on this frame because the Performance Hybrid construction has no thick acetate rim to carry a color: the Ultem body is slim and the titanium at the bridge and temples does the structural work, for a total of about 12 grams. The squared shape runs 54 mm in the eye with 42 mm of lens depth on a 140 mm front, a balanced medium that never pushes at the temples. Lenses are cut from MR-8 Mitsui optical-grade resin. A good everyday choice if you want FL-41 glasses with some color and no weight.

The filter, in measured terms

• 7.9% measured transmission at 420 nm and 13.8% at 450 nm - the blue band is attenuated across its width rather than cut
• 12.6% at 520 nm - the green band is attenuated in the same pass
• 44.2% at 570 nm rising to 100% above 670 nm - the rose band is deliberately preserved
• Luminous transmittance 41.1%, Filter Category 2
• 100% UV protection (UV400)

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.

Will the Elegan fit you?

Check the three numbers inside the arm of the pair you wear now: eye, bridge, temple. Elegan reads 54-16-145. The 140 mm front puts it in the center of the medium band, comfortable on faces from about 135 to 143 mm across. Temples are a full 145 mm, so they suit a standard head depth. The 16 mm bridge is on the narrow side and sits best on a lower nose bridge; if yours is prominent, the frame may ride a little high.

• Elegan Matte Slate Blue frame with FL-41 lenses
• Hard case and microfiber cleaning cloth
• Spectrophotometer report reference for your lens
• One-year frame warranty, six-month lens warranty