| XS | S | M | L | XL | XXL | |
| Men | 118-123 | 124-129 | 130-135 | 136-141 | 142-147 | 148+ |
| Women | 114-119 | 120-125 | 126-131 | 132-137 | 138-143 | 144+ |
| Kids | 107-112 (Infant) | 113-118 (Toddler) | 119-124 (Little Kids) | 125-130 (Big Kids) |
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Serengeti Boron
That Was a Popular Color.
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Free Shipping & Returns
Free Shipping & Returns
Free Shipping & Returns
Don't pay a cent for standard shipping ever again. Other shipping options are available. Shipping Policy
Not 100% satisfied with your purchase? Return them within 45 days for a full refund or exchange. Return Policy
See Better Guarantee
See Better Guarantee
See Better Guarantee
We understand prescription lenses are an investment in your vision. At SportRx, we go beyond premium brand names and prescription lenses. We give you friendly professionals to help you find what you need and 45 days to make sure you’re happy with your purchase. Your satisfaction is our promise, or your money back. Learn More
FSA & HSA Accepted
FSA/HSA ACCEPTED
FSA/HSA ACCEPTED
Flexible spending accounts (FSA), health savings accounts (HSA), and out-of-network vision insurance coverage can all be used towards awesome new prescription sunglasses, eyeglasses, and goggles. Learn More
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PRODUCT OVERVIEW
Coverage
Sweatability
Prescription Friendliness
SportRx Frame Width™ 
138mm
138mmSportRx Frame Width™ (SFW) is the measurement our Sports Opticians use to find the most accurate fit possible. Unlike most eyewear measurements that have little to do with fit, SFW serves as an indicator for how well a frame or goggle will fit your face.
View Size & Fit GuideSPORTRX FIT GUIDE
SportRx Frame Width™ (SFW) is the measurement our Sports Opticians use to find the most accurate fit possible. Unlike most eyewear measurements that have little to do with fit, SFW serves as an indicator for how well a frame or goggle will fit your face.
SportRx Frame Width™ Chart
*All Sizes in MillimetersDETERMINING YOUR SFW
Use Eyeglasses and Not Sunglasses
Using flatter eyeglasses makes for a more accurate measurement. It takes a bit more finesse with wrapped sunglasses to get an accurate SFW measurement.
Have more than one pair?It never hurts to have more than one 'frame' of reference! If you have more than one pair that you love, you can measure multiple pairs and get an average.
Make sure the glasses fit!
Since we're using your glasses as a template for ideal fit, make sure they're a pair that are comfortable: not too wide, not too narrow. A quick glance in the mirror will show if the frames spread too far past the edges of your face or seem to 'pinch' it.
How/What do I measure?Measure with the temples opened out fully. Aim for right behind the hinge and measure from the inside of the frame material of one side to the inside of the other side.
FINDING YOUR BRIDGE FIT
Finding the right eyewear for your face means two things: the right frame size and the right bridge style. At SportRx, we have three different bridge styles:
Standard
A standard nose bridge is best for those with nose bridges that go higher than their pupils, or if you have more narrow cheekbones. Standard nose bridges are fixed and don’t include adjustable nose pads.
AdjustableAn adjustable nose bridge includes flexible nose pads that can be adjusted for a firm, yet comfortable hold. This style is best for those who prefer a more customizable fit.
Low-Bridge
The low-bridge fit is designed for those with narrow nose bridges or cheekbones higher than their nose bridge. Also called Asian Fit, this is a great choice if your frames tend to slide down or touch your cheeks.
Unleash your daring spirit with Serengeti Boron sunglasses – a fusion of metal and acetate crafting a modern take on a classic look. The Boron sunglasses are a timeless statement piece that embody Sergengeti’s legacy in drivewear. The double bridge and adjustable nosepads ensure style meets comfort in this dynamic design. For those seeking prescription lenses, SportRx has you covered. Choose from Serengeti’s signature lightweight mineral glass or Trivex prescription lenses to experience unrivaled visual clarity when you hit the road. The Serengeti Boron sunglasses are more than eyewear, they are an adventure companion.
Benefits
Glass Clarity Without the Weight
A full 20% lighter than standard glass lenses, Serengeti's Ultra-light Mineral Lens brings you the pristine optics of glass with a featherweight feel.
Customized Comfort
Fine-tune the fit of your glasses with adjustable nose pads for better optical alignment, comfort and wear-ability.
Slip Free
Rubber nose pads keep your frames in place and optically aligned even as you sweat, jump, slide, bounce, you name it.
SIZE & FIT GUIDE
- Lens Measurements
1 - Lens Width: 56 mm
2 - Lens Height: 46 mm
- Frame Measurements
3 - Bridge Width: 20 mm
4 - SportRx Frame Width™ (SFW): 138 mm | Learn More
5 - Temple Arm Length: 145 mm
- Frame Fit
L, XL | Not sure about frame fit? Frame Fit Guide
- Bridge Fit
Adjustable | Not sure about bridge fit? Bridge Fit Guide
TECH SPECS
- Frame Materials
- Acetate, Metal
- Safe from Harmful UV Rays
- Block carcinogenic ultraviolet (UV) light from reaching your eyes. With 100% UV protection, your eyes are safe from absorbing harmful sun rays.
- One Lens, Multiple Corrections
- Progressives allow you to see near and far in one pair of glasses. Vision in progressives feels natural with the multi-focal lens seamless transition.
- 6 Base
- The most common base curve for casual wear glasses. These types of glasses will have a slight curve to the lenses and frame, but are still fairly flat.
- Included Accessories
- Cleaning Cloth, Hard Case
- Perfect For These Activities
- Casual Lifestyle, Driving
Serengeti Mineral LensesSerengeti is the only brand offering a 3-in-1 mineral lens technology, allowing you to experience the world at its most aspirational.
Serengeti Mineral Lens Technology
Serengeti ensures top visual acuity and eye protection by meticulously selecting and checking all materials and components used in their lenses. Their ultra-light mineral lenses, made from recyclable borosilicate optical glass, offer unmatched protection and visual experience while reducing environmental impact. These lenses are thinner and lighter, photochromic, scratch-resistant, and feature anti-reflective coatings to eliminate glare.
The Ultimate High Definition Vision of Everything in Sight
Photochromic TechnologySerengeti's Photochromic lenses adapt to any light condition by reacting to UV radiation. They transition gradually from light to dark based on UV exposure, optimizing for the environment to provide the exact amount of light needed, reducing eyestrain, and enhancing vision in all settings.
Spectral Control TechnologySerengeti's Spectral Control™ technology filters up to 95% of blue light, enhancing colors and contrasts for high-definition vision. By reducing blue light transmission, this technology protects eyes from aging and damage, improves depth perception, and provides vivid, crisp visuals in all light conditions.
Polarization TechnologySerengeti's Polarization technology eliminates 99.9% of glare from distracting, discomforting, disabling, and blinding sources, providing absolute clarity and reducing eye fatigue. This ensures no more reflections from vehicle headlights, intense lights, or shiny surfaces, allowing for ultimate glare protection and uncompromised vision in all environments.
Serengeti Boron Reviews
*Results Vary From Person To Person
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