Features
SIZE

59 mm.
Before making your purchase, make sure to check the measurements of your glasses. This model is available in x lens width. All dimensions are listed in millimeters and include lens width, bridge, and temple length.
MATERIAL

Lens Material
EASY INSTALLATION

Easy Installation
All our spare parts are designed to fit perfectly with your original model. You can do it yourself at home by following our step-by-step instructions or videos.
Description

Restore Your Ray-Ban RB3721CH with Original Replacement Lenses
Bring your Ray-Ban RB3721CH sunglasses back to life with these 100% original replacement lenses, manufactured and distributed by Ray-Ban/Luxottica. Each pair ensures a perfect fit, premium optical quality, and the iconic RB logo laser-etched for authenticity. Whether your lenses are scratched, damaged, or you simply want a fresh look, these official lenses guarantee your sunglasses retain their original value and performance.
Choosing original Ray-Ban replacement lenses means you maintain the intended visual experience and sun protection. Avoid generic parts—trust the precision, design, and official warranty that only authentic Ray-Ban lenses provide.
Technical Specifications and Materials
- Compatibility: Exclusively for Ray-Ban RB3721CH. Always check the model code on your frame.
- Sizes and measurements: Lens size: 59 mm. Diameter: 67 mm. Height: 45 mm.
- Lens material: Plastic (polycarbonate), Chromance standard.
- Available colors:
- 5J – Silver Mirror Chromance Polarized
- J0 – Blue Degraded Mirror Chromance Polarized
- 6O – Green Mirror Silver Chromance Polarized
- A1 – Flash Blue Mirror Chromance Polarized
- Shape: Square
- Use: Sun (premium UV protection)
- Audience: Adult
- Product type: Original Ray-Ban replacement, distributed by Luxottica
How to Check Your Model and Exact Size
To ensure compatibility, follow these steps:
- Find the model code (RB3721CH) engraved on the inside of your temple arm.
- Check the size (e.g., 59) and color code, usually next to the model number.
- Compare the diameter and shape of your original lenses with the specifications.
- If unsure, measure your current lenses and match them to the listed details.
Frequently Asked Questions Before Buying Your Lenses
Are these identical to the lenses my sunglasses came with?
Yes, these are original Ray-Ban/Luxottica replacement lenses, made to the same standards as factory lenses. Official updates in materials or tints may occur depending on the variant or production year.
What exactly is included in my order?
Your order includes one pair of original Ray-Ban RB3721CH lenses. The frame is not included.
Are they guaranteed to be authentic?
We guarantee you will receive original Ray-Ban replacement lenses, distributed by the official manufacturer, with all authenticity marks.
Discover our full range of original Ray-Ban replacement parts.
You can also browse all our original Ray-Ban lenses available for other models.
Tutorial
How to Change Your Glasses’ Temples in 5 Steps
- Prepare your tools: You will need a small screwdriver (if the temples have screws) or just your hands if they are snap-on.
- Remove the old temples: If they are attached with screws, carefully unscrew them. If they are snap-on, gently slide them out of the frame.
- Compare the new temples: Ensure the replacement is compatible with your model by checking the size and attachment system.
- Install the new temples: Properly align the hinges and tighten the screws or snap the temples into place.
- Check the fit: Try on the glasses to make sure the temples are securely attached and aligned. Adjust if necessary.
It’s that easy! With these simple steps, you can give your favorite glasses a second life effortlessly.
Be Eco-Friendly

Commitment to Quality and the Environment
At Replacementlenses.net, our commitment to both quality and the environment is at the core of our mission.
We understand the importance of sustainability in today’s world, which is why we offer replacement parts for your glasses. Our goal is to help you extend the life of your favorite eyewear, reducing waste and the need for new purchases.
By choosing our products, you not only save money but also contribute to a more sustainable future. We believe that every small effort counts and that together we can make a big difference in protecting our planet.
Additional information
| Weight | 25 g |
|---|---|
| Dimensions | 20 × 10 × 1 cm |
| Audience | Adult |
| Use | Sun |
| Product Type | Original |
| Brand | Ray-Ban |
| Ray-Ban Model | |
| Front Material | Front Material |
| Temples Material | Temple Material |
| Size | 59 |
| Shape | Shape |
| Lenses Color | 5J – SILVER MIRROR CHROMANCE POLARIZED – PLASTIC, 6O – GREEN MIRROR SILVER CHORMANCE POLARIZED – PLASTIC, A1 – FLASH BLUE MIRROR CHROMANCE POLARIZED – PLASTIC, J0 – BLUE DEGRADED MIRROR CHROMANCE POLARIZED – PLASTIC |
| Temple Size | 145 |
| Height (mm) | 45 |
| Width (mm) | 67 |
| Lens material | Lens Material |





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