Brown Photochromic Glasses – Black Square TR90 Frame

Warm Brown That Adapts

Brown photochromic lenses start clear indoors, then deepen in sunlight as UV activates the tint. The warm tone adds contrast for everyday sun, and it may stay lighter behind most car windshields.

Black Square TR90 Frame anchors the color with glossy soft-square TR90 and a clean minimalist profile. Adjustable metal nose pads help you set the fit, so it stays comfortable from doorway-to-daylight transitions to long afternoons outside.

• Lenses: Brown Photochromic CR-39 lenses stay clear indoors and develop a warm brown tint outdoors in sunlight. UV-activated for changing light.
• Frame: Black Square TR90 Frame is a slim soft-square TR90 frame with a glossy black finish and adjustable metal nose pads for a custom fit.
• Build: Durable TR90 full-rim construction with standard hinges; designed for everyday wear and easy comfort.
• Fit: Medium fit with a soft-square shape that complements round and oval faces. Nose pads help fine-tune where it sits.
• Best For: Commute days, coffee runs, walking between meetings, and weekend errands.