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Ray-Ban RB4378 sunglasses (quarter view)

Ray-Ban RB4378

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Ray-Ban RB4378
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    Ray-Ban RB4378

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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. Learn More

    Not 100% satisfied with your purchase? Return them within 45 days for a full refund or exchange. Learn More

    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

    Looking for Rx replacement lenses?

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    Need Help With Fit or Prescription?

    Talk with one of our friendly Sports Opticians.

    PRODUCT OVERVIEW

    Coverage
    • Low
    • Moderate
    • Max
    Sweatability
    • Casual
    • Athleisure
    • Performance
    Prescription Friendliness
    • No Rx
    • Some Rx
    • Most Rx
    SportRx Frame Width™
    SportRx Frame Width 132mm

    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.

    This round nylon frame is lightweight and comfortable for all-day wear. The feminine shape provides a slightly oversized look, which gives great coverage from those harmful UV rays. The RB4378 is available in multiple colors, so you’re sure to find the perfect style to fit your personality. This sunglass is especially flattering on square, heart, and oval face shapes. If you love styles like the Ray-Ban Erika and Wayfarer II, you'll love the RB4378. Throw on the Ray-Ban RB4378 sunglasses to look effortlessly cool at your next beach hang.

    Benefits

    Glare Protection

    Enables better vision by reducing the amount of reflective light bouncing off your lenses.

    Water Resistant

    Hydrophobic coating helps sweat and water droplets run-off the surface of lenses. Great for rainy days or for sweaty workouts.

    Smudge Protection

    Oleophobic coating protects the lens against fingerprint smudging & facial oils. Oils are repelled from the lens surface making them easier to clean.

    SIZE & FIT GUIDE

    Lens Measurements

    1 - Lens Width: 54 mm

    2 - Lens Height: 46.9 mm

    Frame Measurements

    3 - Bridge Width: 16 mm

    4 - SportRx Frame Width™ (SFW): 132 mm | Learn More

    5 - Temple Arm Length: 145 mm

    Frame Fit

    L | Not sure about frame fit? Frame Fit Guide

    Bridge Fit

    Standard | Not sure about bridge fit? Bridge Fit Guide

    TECH SPECS

    Frame Materials
    Nylon
    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, Soft Case
    Perfect For These Activities
    Athleisure, Casual Lifestyle, Driving