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Compatible Ray-Ban 3721 Replacement Lenses

High Quality

2-Year Warranty

Set of 2 (Both)

Identify your model

Compatible Ray-Ban 3721 Replacement Lenses

From 19.00 €

⚠️ NOTICE: Lens with 5% to 45% darkening. Includes integrated Blue Light Filter and UV protection. This is the darkest option in this range, but not as dark as standard sunglasses.
⚠️ NOTICE: Lens with 0% to 70% darkening. Includes integrated Blue Light Filter and UV protection. This is the darkest option in this range, but not as dark as standard sunglasses.
Important note: Engraving is strictly limited to custom text. Registered trademarks (e.g., Ray-Ban, Oakley, etc.) cannot be engraved under any circumstances.
Note: Locations are shown in front view (as if looking at another person).
/pair

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

Polycarbonate

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

Compatible Ray-Ban 3721 Replacement Lenses Refresh your Ray-Ban 3721 eyewear in a smart and cost-effective way—no need to compromise on visual protection or fit. Our compatible replacement lenses are designed as the perfect economic solution to revive your favorite glasses. Restore clarity and comfort to your daily routine with lenses made for excellent value.

Technology and Materials

These high-quality spare parts are crafted from durable TAC and polycarbonate, renowned for their lightweight feel and reliable impact resistance. With UV400 protection as standard, your eyes stay fully shielded from harmful UV rays—ensuring safe vision whether outdoors or under bright indoor lighting.

Compatibility and Precision Fit

Specifically engineered for Ray-Ban 3721, these square lenses with exact dimensions (height 45, diameter 67, base curve 6) ensure a precise and stable fit. The DIY installation is simple and straightforward, so you can replace your lenses at home without needing professional help.
  • Significant savings compared to original lenses
  • UV400 protection for your eyes
  • Custom fit for the 3721 model
  • Easy do-it-yourself installation
  • Practical solution to extend the life of your eyewear
Choose a reliable alternative designed for perfect compatibility with your model and enjoy quality at a flexible price point.

Tutorial

How to change the lenses on your glasses?

  1. Prepare your glasses: Wash your hands and place the glasses on a clean, soft surface to avoid scratches.
  2. Loosen the frame screw: Use a precision screwdriver to carefully loosen the screw holding the lens. Keep the screw in a safe place to avoid losing it.
  3. Remove the old lenses: Once the screw is loosened, gently slide out the lens, avoiding excessive force to prevent damaging the frame.
  4. Align the new lenses: Ensure the new lenses match the curvature and shape of the frame.
  5. Insert the new lenses: Carefully place the lens into the frame and reinsert the screw, tightening it gently to secure the lens without over-tightening.
  6. Check and clean: Ensure the lenses are properly fitted and clean the surface with a microfiber cloth.

It’s that easy! Enjoy your refreshed glasses with new lenses.

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 20 g
Dimensions 20 × 10 × 1 cm
Size

59
Ray-Ban Model

Front Material

Metal
Temples Material

Metal
Lens material

Polycarbonate
Shape

Square
Height (mm)

67
Lens curvature

Base 6
Use

Sun
Product Type

Compatible
Audience

Adult

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