Description
Description
Introducing the Ray-Ban RB3757 Kai, a refined expression of urban luxury. This unisex sunglasses silhouette fuses a slender metal full-frame with an oval profile, offering timeless appeal that suits every day and occasion. With adjustable nosepads for a personalised fit, and two width options (56mm and 59mm), RB3757 Kai is designed to flatter a range of face shapes while preserving comfort for all-day wear. Each pair arrives authentic and ready to wear with its official Ray-Ban packaging.
Crafted with a metal front and metal temples, the Kai frame delivers a light, durable feel with lasting polish. The lenses are fashioned from Polyamide Bio, a modern, high-performance material chosen for clarity and resilience. The combination creates a sleek, low-profile silhouette that remains comfortable during long days in the city or by the coast. The base 2 curvature adds a subtle lift to the optical profile, while the articulated temples and precisely engineered hinges support easy, secure wear. The precise bridge size of 15 mm and temple length of 145 mm contribute to a balanced, secure fit.
RB3757 Kai is offered in a refined palette across several finishes. Choose from Gunmetal, Pale Gold, or Silver for a classic metallic sheen, or opt for Gunmetal (004/2V) – Azure Polarized for a bold, modern look. Pale Gold (921387) with Dark Grey lenses and Pale Gold (9213/2) with Green lenses provide contemporary contrasts. Available widths include a 56mm lens and a larger 59mm option to suit preference and proportion.
As an official stockist of premier brands, Ardor Eyewear guarantees authenticity, premium packaging, and competitive pricing. Our service emphasises a seamless online experience — from virtual try-ons and home trials to fast delivery with transparent tracking and easy returns. For those seeking vision correction, the RB3757 Kai is prescription-ready with options to tailor lenses to your prescription, ensuring superior clarity while preserving the design integrity of the frame.
Elevate your eyewear collection with the Ray-Ban RB3757 Kai, a statement of designer sunglasses style and luxury eyewear craftsmanship. Explore the available finishes, place your order with confidence, and enjoy the assurance of authentic Ray-Ban optical frames from Ardor Eyewear — where premium frames meet personalised service.
Product Specifications
Product Specifications
| Model Code: | Ray-Ban - RB3757 - Kai - Sunglasses |
| Brand: | Ray-Ban |
| Product Type: | Sunglasses |
| Barcode | 8056262454008 |
| Gender: | Unisex |
| Model Name: | Kai |
| Theme: | Nowness |
| Suits These Face Shapes: | Square Face, Oblong Face, Heart Face, Diamond Face, Narrow Face |
Frame Specifications
Frame Specifications
| Frame Shape: | Oval |
| Front Material: | Metal |
| Frame Front Colour: | Grey |
| Front Colour (detailed): | Gunmetal |
| Frame Temple Material: | Metal |
Lens Specifications
Lens Specifications
| Lens Color: | Dark Violet |
| Lens Material: | Polyamide Bio |
| Lens Base Curve: | Base 2 |
Size & Fit Details
Size & Fit Details
| Lens Width: | 56 MM |
| Lens Height: | 34 MM |
| Bridge Size: | 15 MM |
| Temple Length: | 145 MM |
| Size Guide: | L |
| Geofit: | Adjustable Nosepads |
Ray-Ban Packaging
Ray-Ban Packaging

*The packaging image is for reference purposes only; actual packaging may differ.
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Ray-Ban - RB3757 - Kai - Sunglasses
Ray-Ban
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Ray-Ban - RB3757 - Kai - Sunglasses (Ray-Ban) is selling:
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- 2 Year Warranty
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Description
Description
Introducing the Ray-Ban RB3757 Kai, a refined expression of urban luxury. This unisex sunglasses silhouette fuses a slender metal full-frame with an oval profile, offering timeless appeal that suits every day and occasion. With adjustable nosepads for a personalised fit, and two width options (56mm and 59mm), RB3757 Kai is designed to flatter a range of face shapes while preserving comfort for all-day wear. Each pair arrives authentic and ready to wear with its official Ray-Ban packaging.
Crafted with a metal front and metal temples, the Kai frame delivers a light, durable feel with lasting polish. The lenses are fashioned from Polyamide Bio, a modern, high-performance material chosen for clarity and resilience. The combination creates a sleek, low-profile silhouette that remains comfortable during long days in the city or by the coast. The base 2 curvature adds a subtle lift to the optical profile, while the articulated temples and precisely engineered hinges support easy, secure wear. The precise bridge size of 15 mm and temple length of 145 mm contribute to a balanced, secure fit.
RB3757 Kai is offered in a refined palette across several finishes. Choose from Gunmetal, Pale Gold, or Silver for a classic metallic sheen, or opt for Gunmetal (004/2V) – Azure Polarized for a bold, modern look. Pale Gold (921387) with Dark Grey lenses and Pale Gold (9213/2) with Green lenses provide contemporary contrasts. Available widths include a 56mm lens and a larger 59mm option to suit preference and proportion.
As an official stockist of premier brands, Ardor Eyewear guarantees authenticity, premium packaging, and competitive pricing. Our service emphasises a seamless online experience — from virtual try-ons and home trials to fast delivery with transparent tracking and easy returns. For those seeking vision correction, the RB3757 Kai is prescription-ready with options to tailor lenses to your prescription, ensuring superior clarity while preserving the design integrity of the frame.
Elevate your eyewear collection with the Ray-Ban RB3757 Kai, a statement of designer sunglasses style and luxury eyewear craftsmanship. Explore the available finishes, place your order with confidence, and enjoy the assurance of authentic Ray-Ban optical frames from Ardor Eyewear — where premium frames meet personalised service.
Product Specifications
Product Specifications
| Model Code: | Ray-Ban - RB3757 - Kai - Sunglasses |
| Brand: | Ray-Ban |
| Product Type: | Sunglasses |
| Barcode | 8056262454008 |
| Gender: | Unisex |
| Model Name: | Kai |
| Theme: | Nowness |
| Suits These Face Shapes: | Square Face, Oblong Face, Heart Face, Diamond Face, Narrow Face |
Frame Specifications
Frame Specifications
| Frame Shape: | Oval |
| Front Material: | Metal |
| Frame Front Colour: | Grey |
| Front Colour (detailed): | Gunmetal |
| Frame Temple Material: | Metal |
Lens Specifications
Lens Specifications
| Lens Color: | Dark Violet |
| Lens Material: | Polyamide Bio |
| Lens Base Curve: | Base 2 |
Size & Fit Details
Size & Fit Details
| Lens Width: | 56 MM |
| Lens Height: | 34 MM |
| Bridge Size: | 15 MM |
| Temple Length: | 145 MM |
| Size Guide: | L |
| Geofit: | Adjustable Nosepads |
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
- Designer Eyewear Under 150
- Everything
- Extra Large Sunglasses For Men
- Extra Large Sunglasses for Women
- Grey Colour Sunglasses
- Large Sunglasses
- Large Sunglasses For Mens
- Large Sunglasses For Women
- Men Polarized Sunglasses
- Men Sunglasses
- Oval Shape Sunglasses
- Photochromic Sunglasses
- Polarized Sunglasses
- Prescription Sunglasses
- Ray Ban Men Sunglasses
- Ray Ban Prescription Sunglasses
- Ray Ban Sunglasses
- Ray Ban Unisex Sunglasses
- Ray Ban Women Sunglasses
- Sunglasses
- Under £100 Sunglasses
- Unisex Polarized Sunglasses
- Unisex Sunglasses
- Women Diamond Face Sunglasses
- Women Heart Face Sunglasses
- Women Narrow Face Sunglasses
- Women Oblong Face Sunglasses
- Women Polarized Sunglasses
- Women Square Face Sunglasses
- Women Sunglasses
- £100 - £250 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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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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