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Ray-Ban

Ray-Ban Womens Rb4378 Square Sunglasses

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$140.80 Why this price?
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Availability: Only 3 left in stock, order soon!
Fulfilled by ECAMZ SALES
Arrives Monday, Mar 2
Order within 8 minutes
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Color: Transparent/Grey Gradient


Lens Width: 54 Millimeters


Description

Discover the complete collection of Ray-Ban sunglasses styles available online. Choose from a selection of iconic and instantly recognizable frames, including legendary Aviator and Wayfarer styles, as well as edgy new arrivals inspired by the latest trends. Browse our men's sunglasses and women's sunglasses collections to find your perfect style. Ray-Ban sunglasses sold by authorized sellers, like Amazon, are eligible for all manufacturer warranties and guarantees. Click on the Ray-Ban link above the product title to shop the entire Ray-Ban sunglass and eyeglass assortment.

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: #149,591 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #1,085 in Women's Sunglasses


#1,085 in Women's Sunglasses:


Customer Reviews: 4.3 4.3 out of 5 stars (565)


Brand: Ray-Ban


Age Range Description: Adult


Manufacturer: Ray-Ban


Item Type Name: Sunglasses


Item Weight: 20 Grams


Unit Count: 1.0 Count


Color: Transparent/Grey Gradient


Item Shape: Square


Lens Color: Grey Gradient


Style Name: Rb4378


Frame Material Type: Propionate


Lens Material Type: Plastic


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.


Material: Plastic


Fit Type: Regular


Lens Type: Gradient


Lens Coating Description: UV Protection Coating


Sport Type: Running, Walking


Ultraviolet Light Protection: True


Polarization Type: Polarized


Arm Length: 145 Millimeters


Bridge Width: 16 Millimeters


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Mar 2

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.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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
    • Love these!!! Classic fit, elegant and stylish for a wide face!
Color: Havana/Gradient Brown Lens Width: 54 Millimeters
Love these! They’re super flattering, lightweight, great quality! Sun protection 5 stars, fit my wide face perfectly! No hair snagging when you put on top of your head ladies! Love these!!
Reviewed in the United States on July 10, 2025 by samantha engerman
    • The fit
Color: Havana/Gradient Brown Lens Width: 54 Millimeters
These sun glasses are great.
Reviewed in the United States on November 30, 2025 by Amy Taylor
    • Great sunglasses
Color: Black/Grey Gradient Lens Width: 54 Millimeters
Love these sunglasses
Reviewed in the United States on February 8, 2026 by Carrie
    • Muy bonitos aunque se sienten frágiles
Color: Havana/Gradient Brown Lens Width: 54 Millimeters
Muy bonitos aunque se sienten frágiles.
Reviewed in the United States on December 17, 2025 by Amazon Customer
    • Looks great !!
Color: Havana/Gradient Brown Lens Width: 54 Millimeters
Excellent choice
Reviewed in the United States on November 6, 2025 by BIG DAWGZ
    • Very Disappointing
Color: Havana/Dark Blue Lens Width: 54 Millimeters
I have been an ardent fan of Ray Ban sunglasses for years but this particular pair was very disappointing. The lenses were both terribly scratched. I don't know if they left the factory that way or someone wore them for a long time and carelessly tossed them about. Either way, they should have never been presented as new for sale. This kind of nonsense tarnishes a good brand. ... show more
Reviewed in the United States on October 14, 2024 by Verified Buyer
    • Ehh probably won’t buy again.
Color: Black/Grey Gradient Lens Width: 54 Millimeters
Expensive, feel cheap and very dark.
Reviewed in the United States on January 8, 2026 by Robin L.

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