F3931
F3931
Men's Square Rimless
Prescription
Prescription
✓ Progressive
✓ Blue Light Blocking
✓ Photochromic Lenses
✓ Reading
✓ Color Tint
✓ Driving Lenses
Services & Guarantees
Services & Guarantees
- FSA/HSA Eligible
- 45-Day Exchanges & Returns
- 365-Day Warranty
- 3-Day Shipping Available
- Free Shipping Over $90
The F3931 is a men's square titanium frame with a browline upper construction and an open lower rim. The dark gunmetal finish runs through the brow, bridge, and full-length temples for a uniform monochrome look.
- Frame shape: Square
- Rim style: Rimless lower / browline upper
- Frame material: Titanium
- Measurements: 54 mm lens width · 37 mm lens height · 17 mm bridge · 145 mm temple · 141 mm total frame width
- Size: Medium
- Lens options: Single Vision
- Coating options: Blue Light, Photochromic, Anti-Reflective, Anti-Scratch
- Color: Gray
Single Vision
Corrects vision for one distance, like reading or driving. Simple and effective for daily use.
Bifocal
Combines near and far vision in one lens with a visible line. Great for switching between tasks easily.
Progressive
Blends near, mid, and far vision smoothly with no lines. Ideal for all-day versatility.
Blue-Light Blocking
Reduces eye strain by filtering harmful blue light from screens and devices. Perfect for long hours of digital use, it helps improve sleep quality and comfort.
Photochromic
Adapts to light changes, darkening outdoors and lightening indoors for convenience. Protects against UV while ensuring all-day comfort.
Anti-Glare
Minimizes reflections and glare from bright lights or surfaces for sharper vision. Ideal for driving or outdoor activities, it enhances clarity and reduces fatigue.
Shipping Information
Free U.S. shipping on orders over $90
Shipping rates start from $9
U.S. Shipping
• 3 Business Days
• 6 to 9 Business Days
• 10 to 14 Business Days
Local Pick-Up (Free)
International Shipping
• Rates calculated at checkout, duties and taxes may apply
365-Day Warranty
Covers manufacturing defects for 365 days; does not cover damage from accidents, neglect, or improper care.
45-Day Easy Returns & Exchanges
Return, exchange, or refund within 45 days for any reason—hassle-free.
VISION GLOBAL
Reliable eyewear and precision lenses backed by quality craftsmanship and dedicated support.
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FAST AND SECURE DELIVERY
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EASY RETURNS AND EXCHANGES
Return or exchange your order within 45 days with no hassle.