Description
Description
Discover the Ray-Ban RB4378, a refined addition to the modern woman’s eyewear. The silhouette is a crisp square inside a full rim, a timeless geometry that flatters a range of outfits—from tailoring to weekend silhouettes. The frame combines comfort and confidence, with injected front and slender temples that feel lightweight yet sturdy as you move through a busy day. This is authentic designer eyewear designed to endure, with a balance of form and function that makes every moment of wearing feel effortless.
Frame construction highlights everyday reliability. The front and temples are injected for comfortable, flexible wear, while the lenses are crafted from polycarbonate lenses for impact resistance and clear optical performance. The lens width is 54mm with a height of 47mm, a bridge of 16mm, and temples at 145mm, all harmonising for a clean, secure fit that accompanies you from morning meetings to city strolls.
Geofit High Bridge Fit ensures comfort for higher bridges and a wide range of face shapes, including Round, Oval, Long, and Narrow faces. The RB4378 is engineered to sit comfortably, with weight distributed evenly so you feel confident all day without constant readjustment.
Choose among a curated palette that complements every style, including Black, Black (601/8G) - Grey Gradient, Transparent, Transparent Grey, Havana, and Havana (710/80) - Dark Blue. Each option preserves the sleek, premium lines of the frame while offering variations to suit your mood or wardrobe.
As an official stockist of premium brands, Ardor Eyewear guarantees authenticity with full manufacturer packaging and competitive pricing. Our service offers easy online ordering, fast delivery, transparent tracking, and easy returns—ensuring you can shop with confidence for premium frames and reliable, premium eyewear.
Product Specifications
Product Specifications
| Model Code: | RB4378 |
| Brand: | Ray-Ban |
| Product Type: | Sunglasses |
| Barcode | 8056597626859 |
| Gender: | Women |
| Theme: | Essentials |
| Suits These Face Shapes: | Round Face, Oval Face, Long Face, Narrow Face |
Frame Specifications
Frame Specifications
| Frame Shape: | Square |
| Front Material: | Injected |
| Rim Type: | Full Rim |
| Frame Front Colour: | Black |
| Front Colour (detailed): | Black |
| Frame Temple Material: | Injected |
Lens Specifications
Lens Specifications
| Lens Color: | Grey Gradient |
| Lens Material: | Polycarbonate |
| Lens Base Curve: | Base 6 |
Size & Fit Details
Size & Fit Details
| Lens Width: | 54 MM |
| Lens Height: | 47 MM |
| Bridge Size: | 16 MM |
| Temple Length: | 145 MM |
| Size Guide: | S |
| Geofit: | High Bridge Fit |
Ray-Ban Packaging
Ray-Ban Packaging

*The packaging image is for reference purposes only; actual packaging may differ.
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Ray-Ban - RB4378 - Sunglasses
Ray-Ban
VAT & Shipping Included in Deal Price
RB4378 (Ray-Ban) is selling:
Fast! Last few pairs left of these 100% original designer eyewear. Buy Now Before the Deal Ends Forever!
Proudly British: Authentic eyewear, fast UK delivery, easy returns. Shop with confidence!
- Free Delivery (Save £8)
- 14 Days Return
- 2 Year Warranty
Out of stock — get an email when it's back
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Description
Description
Discover the Ray-Ban RB4378, a refined addition to the modern woman’s eyewear. The silhouette is a crisp square inside a full rim, a timeless geometry that flatters a range of outfits—from tailoring to weekend silhouettes. The frame combines comfort and confidence, with injected front and slender temples that feel lightweight yet sturdy as you move through a busy day. This is authentic designer eyewear designed to endure, with a balance of form and function that makes every moment of wearing feel effortless.
Frame construction highlights everyday reliability. The front and temples are injected for comfortable, flexible wear, while the lenses are crafted from polycarbonate lenses for impact resistance and clear optical performance. The lens width is 54mm with a height of 47mm, a bridge of 16mm, and temples at 145mm, all harmonising for a clean, secure fit that accompanies you from morning meetings to city strolls.
Geofit High Bridge Fit ensures comfort for higher bridges and a wide range of face shapes, including Round, Oval, Long, and Narrow faces. The RB4378 is engineered to sit comfortably, with weight distributed evenly so you feel confident all day without constant readjustment.
Choose among a curated palette that complements every style, including Black, Black (601/8G) - Grey Gradient, Transparent, Transparent Grey, Havana, and Havana (710/80) - Dark Blue. Each option preserves the sleek, premium lines of the frame while offering variations to suit your mood or wardrobe.
As an official stockist of premium brands, Ardor Eyewear guarantees authenticity with full manufacturer packaging and competitive pricing. Our service offers easy online ordering, fast delivery, transparent tracking, and easy returns—ensuring you can shop with confidence for premium frames and reliable, premium eyewear.
Product Specifications
Product Specifications
| Model Code: | RB4378 |
| Brand: | Ray-Ban |
| Product Type: | Sunglasses |
| Barcode | 8056597626859 |
| Gender: | Women |
| Theme: | Essentials |
| Suits These Face Shapes: | Round Face, Oval Face, Long Face, Narrow Face |
Frame Specifications
Frame Specifications
| Frame Shape: | Square |
| Front Material: | Injected |
| Rim Type: | Full Rim |
| Frame Front Colour: | Black |
| Front Colour (detailed): | Black |
| Frame Temple Material: | Injected |
Lens Specifications
Lens Specifications
| Lens Color: | Grey Gradient |
| Lens Material: | Polycarbonate |
| Lens Base Curve: | Base 6 |
Size & Fit Details
Size & Fit Details
| Lens Width: | 54 MM |
| Lens Height: | 47 MM |
| Bridge Size: | 16 MM |
| Temple Length: | 145 MM |
| Size Guide: | S |
| Geofit: | High Bridge Fit |
Ray-Ban Packaging
Ray-Ban Packaging

*The packaging image is for reference purposes only; actual packaging may differ.
Related Collections
Related Collections
- All Collections
- Best Sellers
- Black Colour Sunglasses
- Designer Eyewear Under 150
- Everything
- Photochromic Sunglasses
- Prescription Sunglasses
- Ray Ban Prescription Sunglasses
- Ray Ban Sunglasses
- Ray Ban Women Sunglasses
- Small Size Sunglasses
- Small Sunglasses For Women
- Square Shape Sunglasses
- Sunglasses
- Under £100 Sunglasses
- Women Heart Face Sunglasses
- Women Long Face Sunglasses
- Women Narrow Face Sunglasses
- Women Oval Face Sunglasses
- Women Round Face Sunglasses
- Women Sunglasses
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Authorized UK retailer of Ray-Ban, Oakley, Gucci, Tom Ford, Persol, Saint Laurent and 25+ more. Every pair guaranteed authentic, dispatched from our Derby HQ with free UK delivery, 14-day returns and a 2-year warranty — prescription orders included.
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Every Ray-Ban, Oakley, Tom Ford, Gucci and Persol you'll find here is sourced through our authorized partnerships — never resellers, never grey market. Each pair arrives in its original branded case with manufacturer documentation, ready to verify on the brand's official website.
Pair it with Carl Zeiss or Essilor prescription lenses, fitted in-house by qualified opticians — with anti-reflective, blue-light, photochromic or polarized upgrades to suit how you wear them.
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