Ray-Ban Sunglasses Khal Bio-based - Black Frame Grey Lenses Polarized 51-20
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Product Information
Full details
These Ray-Ban Khal sunglasses are designed for adults seeking stylish, eco-conscious eyewear. The key benefit is the combination of a classic design with bio-based materials and polarized lenses for enhanced visual comfort. A potential caveat is that the bio-based material may require specific care to maintain its integrity. This guide covers their features, performance, and care instructions.
All features
| Gender | Unisex |
|---|---|
| Age Group | adult |
| Colour | Black |
| Material | Nylon |
| Series | Khal |
| Model Part Number | RB4472 667781 51-20 |
| Brand | Ray-Ban |
Extended Product Information
FAQs
What does 'bio-based' mean for these sunglasses?
Bio-based means the materials used to construct the frame are derived from renewable biological sources, making them a more sustainable alternative to traditional plastics.
Are the lenses made of glass or plastic?
The product information indicates a Nylon frame, which is a type of plastic. The lenses are typically made of polycarbonate or a similar impact-resistant material for sunglasses.
How do I know if the 51-20 size is right for me?
The 51mm refers to the lens width and the 20mm refers to the bridge width. For best fit, compare these measurements to sunglasses that already fit you well, or consult a size guide online.
Can I wear these sunglasses for sports?
Yes, the polarized lenses and durable frame make them suitable for many outdoor activities. However, for high-impact sports, consider specialized sports eyewear.
How should I clean my polarized lenses?
Rinse with lukewarm water first to remove debris, then gently wipe dry with a clean microfiber cloth. Avoid using harsh chemicals or abrasive materials.
What is the warranty period for Ray-Ban sunglasses?
Ray-Ban typically offers a limited warranty against manufacturing defects. Please refer to the warranty information provided with your purchase or on the official Ray-Ban website for specific details.
Do these sunglasses offer UV protection?
Yes, all Ray-Ban sunglasses provide 100% UV protection. The polarized lenses further enhance visual comfort by reducing glare.
Troubleshooting
Lenses appear streaky after cleaning
Ensure you are using a clean microfiber cloth and a lens-appropriate cleaning solution or just water. Rinse the lenses thoroughly before wiping.
Sunglasses feel too tight or too loose
Minor adjustments can sometimes be made by gently bending the temples. For significant fit issues, consider professional adjustment at an optical store or consult the retailer.
Reduced visibility with phone or GPS screens
This is a common characteristic of polarized lenses. Try tilting your head slightly to find an angle where the screen is visible, or remove the sunglasses when using such devices.
Frame feels brittle or shows signs of degradation
This may indicate improper storage or exposure to harsh chemicals. Ensure the sunglasses are stored in their case and cleaned only with recommended methods. If degradation is significant, contact the retailer.
Pros and Cons
Pros
- Eco-friendly construction using bio-based materials.
- Polarized lenses significantly reduce glare and improve visual clarity.
- Timeless and versatile unisex design.
- Durable materials ensure long-lasting wear.
- Comfortable fit for adult wearers.
Cons
- Bio-based materials may require specific cleaning to prevent damage.
- Polarized lenses can sometimes affect the visibility of digital screens.
- Specific sizing (51-20) may not fit all face shapes perfectly.
Setup, Compatibility & Care
Setup: No setup is required for sunglasses; they are ready to wear upon purchase. Ensure they fit comfortably on your face.
Compatibility: These sunglasses are designed for general use and are compatible with most face shapes due to their unisex design. The polarized lenses are compatible for everyday outdoor activities but may cause a slight tint or interference with some digital screens.
Care Instructions:
- Cleaning Lenses: Always rinse lenses with lukewarm water before wiping to remove any abrasive particles. Use a microfiber cloth or a specialized lens cleaning cloth to gently wipe the lenses dry. Avoid using paper towels, tissues, or clothing, as they can scratch the lenses.
- Frame Care: Clean the frame with a soft, damp cloth. Avoid harsh chemicals or abrasive cleaners, especially on the bio-based material.
- Storage: When not in use, store the sunglasses in their protective case to prevent scratches and damage. Keep them away from extreme heat, such as prolonged exposure to direct sunlight inside a car, as this can warp the frame and damage the lenses.
- Handling: Avoid placing sunglasses lens-down on surfaces.