Round Boston Style Optical Frame – Model 6177

✅ Material: High-quality TR90 (flexible, lightweight & pressure-resistant)

✅ Frame Type: Retro Round / Unisex

✅ Color: Shine Black

✅ Lens Width: 52mm

✅ Bridge Size: 21mm

✅ Tail Length: 146mm

✅ Ideal For: Prescription, Intelligent Lens (Transition + Anti Blue Rays) and fashion lenses

✅ Comfort Fit: Flexible frame arms for long wear without pressure