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Ray-Ban

Ray-Ban RB4378 Square Sunglasses for Women for Men

  • Based on 766 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Sep 29
Order within 21 hours and 38 minutes
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Color: Transparent / Grey Gradient


Lens Width: 54 Millimeters


Description

RB4378 RB4260D (Low Bridge Fit) RB4379D (Low Bridge Fit) RB4378F (Low Bridge Fit) RB4258F (Low Bridge Fit)

Package Dimensions ‏ : ‎ 7 x 4 x 3 inches; 1 pounds


Item model number ‏ : ‎ 0RB4378


Department ‏ : ‎ Womens


Date First Available ‏ : ‎ April 26, 2023


Manufacturer ‏ : ‎ Ray-Ban


Product Warranty: For warranty information about this product, please click here


Best Sellers Rank: #116,902 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #1,084 in Women's Sunglasses


#1,084 in Women's Sunglasses:


Customer Reviews: 4.4 4.4 out of 5 stars (766)


Color: Transparent / Grey Gradient


Item Shape: Square


Lens Color: Grey Gradient


Style Name: Rb4378


Sunglasses Form: wrap_around


Frame Coverage: Substantial


Endpiece Style: Generic Injected Plastic Endpiece


Frame Arm Texture: Matte Plastic


Lens Type: Gradient


Lens Coating Description: UV Protection Coating


Sport Type: Running, Walking


Ultraviolet Light Protection: Yes


Polarization Type: Polarized


Recommended Uses For Product: Walking, Running, General Outdoor Activities


Fit to Size Sentiment: neutral


Fit Type: Regular


Brand: Ray-Ban


Age Range Description: Adult


UPC: 840270355253


Target Audience: Women


Unit Count: 1 Count


Manufacturer: Ray-Ban


Item Type Name: Sunglasses


Item Weight: 20 g


Style Number: 0RB4378


Manufacturer Part Number: RB4378


Frame Material Type: Propionate


Lens Material Type: Plastic


Material: Plastic


Apparel Fabric Weight Class: Lightweight


Product Care Instructions: Clean with a soft, dry cloth. Store in the provided case to prevent scratches and damage. Do not expose lenses to high heat or direct sunlight when not in use.


Arm Length: 14.5 centimeters


Bridge Width: 16 millimeters


Lens Width: 5.4 centimeters


size: Standard


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 29

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Stylish and Practical! Not too tight on the face.
Color: Black / Grey Gradient Lens Width: 54 Millimeters
I recently bought the Ray-Ban Women's RB4378 Square Sunglasses, and I am so glad I did! I have a square-shaped face, and finding sunglasses that complement my facial structure can sometimes be a challenge. But these fit my face perfectly – they have just the right shape to soften the angles of my face while still giving off a sleek, stylish look. The square frame is modern but classic enough to go with any outfit, whether I’m dressed casually or more put-together. What really stands out to me is how practical these sunglasses are, especially for driving. I drive a lot, and I often find myself driving during sunrise or sunset when the sun is at that difficult angle and it’s hard to see the road. These Ray-Bans do an amazing job of blocking the glare while still giving me clear vision. The lenses are just dark enough to protect my eyes but not so dark that I struggle to see things around me. Whether it’s sunny or overcast, these shades are perfect for keeping my eyes comfortable and focused on the road. Another great feature is that they cover the eye area well, providing full protection from the sun. The lenses are wide enough to shield not just the eyes but also the delicate skin around them, which is a huge plus when you’re outside for long periods. No squinting, no eye strain – just clear, comfortable vision. The frame itself is lightweight, so even if I wear them for hours at a time, they don’t feel heavy or uncomfortable on my face. In terms of style, they’re an absolute winner. The design is chic without being over-the-top, and I’ve gotten so many compliments on how stylish they look. They have that signature Ray-Ban quality and elegance that instantly elevates any look. Whether I’m running errands, driving, or spending the day outdoors, these sunglasses are my new go-to. Overall, I couldn’t be happier with the Ray-Ban RB4378 Square Sunglasses. They fit well, look great, and are incredibly functional, especially when it comes to driving in bright sunlight. If you have a square face like mine or just want a stylish, protective pair of sunglasses, I highly recommend them! ... show more
Reviewed in the United States on September 10, 2024 by Aurora
    • Fave pair of Ray-Bans!
My favorite style of Ray-Bans! I've had several styles over the years but these top them all I love the shape of them, especially that they're not so big that they touch my cheeks. Comfortable on the nose too which is a plus. The lens color is a nice ombre and keeps the sun out of my eyes As any glasses do, the lenses got scratched up but nothing a pair of replacement lenses can't fix ... show more
Reviewed in the United States on April 22, 2026 by A. Gomez
    • Good value
Color: Havana / Brown Gradient Lens Width: 54 Millimeters
Great sunglasses. Just as expected.
Reviewed in the United States on July 11, 2026 by Amazon Customer
    • Sara
Color: Transparent Grey / Dark Blue Polarized Lens Width: 54 Millimeters
Great fit super lightweight and great looking
Reviewed in the United States on June 30, 2026 by Gaby
    • Nice and comfy but wore out fast
Color: Havana / Brown Gradient Lens Width: 54 Millimeters
Review Image by Christine
Super comfortable sunglasses! Only negative is the protective coat on the lense has already started coming off after 2 years with good care. Not worth the money
Reviewed in the United States on April 14, 2026 by Christine
    • Look great on! Perfect fit/shape/color
Color: Havana / Brown Gradient Lens Width: 54 Millimeters
Love everything about these glasses.
Reviewed in the United States on July 3, 2026 by Susan Kohlmann Constable
    • Garbage no quality control expensive garbage
Ray-Ban should be embarrassed to put their name on this. I paid a premium price expecting quality, and instead I’ve now received two pairs of sunglasses that are clearly used, damaged, and falling apart. Both pairs arrived loose, misaligned, and with missing or barely attached screws—completely unacceptable for something marketed as “premium.” They felt worn, like they’d already been returned and shipped right back out without even being checked. The fact that this has happened twice tells me everything I need to know: there is either zero quality control, or customers are being sent used products and expected to just deal with it. At this price point, this isn’t just disappointing—it’s insulting. Ray-Ban is charging top dollar while delivering bottom-tier quality. Save your money. This brand is riding on its name, not its quality. ... show more
Reviewed in the United States on April 29, 2026 by Elizabeth McCurdy
    • Great!
Color: Havana / Brown Gradient Lens Width: 54 Millimeters
I received these as a Christmas gift & have never owned expensive sunglasses! I can really tell the difference in the quality! I only wear them when going somewhere nice though because I lose sunglasses all the time. That's why I never invested in a good pair.
Reviewed in the United States on June 7, 2026 by Thenursec

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