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The Ray-Ban RB5421 eyeglasses bring a clean, modern take on the rectangular frame. Built from durable acetate, these full-rim frames feature slim temples and defined lines that work across face shapes and settings—from the office to casual wear. The frame is available in transparent crystal, classic tortoise, and striped havana patterns, each showing off acetate's rich depth of color.
Acetate isn't ordinary plastic. It's a plant-based material derived from cotton and wood pulp, prized in quality eyewear for good reasons: it's lightweight enough for all-day comfort, flexible enough to hold adjustments, and strong enough to handle daily wear without losing its shape. The RB5421 takes full advantage, pairing that material with spring hinges that let the temples flex outward when you put the frames on or take them off. That flexibility reduces stress on the frame and prevents the temple pinch that rigid hinges can cause.
The frames are prescription-ready and accommodate a wide range of lens options—single vision, progressive, blue-light filtering, or Transitions. Two sizes are available: 53mm and 55mm lens width, both with a 19mm bridge and 145mm temples. The rectangular shape flatters oval, round, and heart-shaped faces, and the unisex design means the proportions work for men and women alike.
Ray-Ban's logo sits subtly on each temple. The overall look is understated—no heavy branding, just solid construction and versatile style that doesn't try too hard. If you need everyday frames that look good and hold up, the RB5421 delivers.
Product Details
Product DetailsModel
0RX5421Shape
Gender
Material
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsColor Code
2001Color Description
TransparentLens Color
Clear
Frame Color
BrownColor Code
8255Color Description
Striped Brown & GreenLens Color
Clear
Frame Color
TortoiseColor Code
2012Color Description
HavanaLens Color
Clear
Frame Color
BrownColor Code
8255Color Description
Striped Brown & GreenLens Color
Clear
Color Code
8254Color Description
Striped Grey & BlueLens Color
Clear
Color Code
8254Color Description
Striped Grey & BlueLens Color
Clear
Frame Color
BrownColor Code
8251Color Description
Striped Brown & RedLens Color
Clear
Frame Color
TortoiseColor Code
2012Color Description
HavanaLens Color
Clear
Color Code
2001Color Description
TransparentLens Color
Clear
Frame Color
BrownColor Code
8251Color Description
Striped Brown & RedLens Color
Clear
Frame Color
BlackColor Code
2000Color Description
BlackLens Color
Clear
Frame Color
BlackColor Code
2000Color Description
BlackLens Color
Clear
Color Code
8425Color Description
Havana Yellow TurtleLens Color
Clear
Color Code
8424Color Description
Havana Blue TurtleLens Color
Clear
Color Code
8424Color Description
Havana Blue TurtleLens Color
Clear
Color Code
8425Color Description
Havana Yellow TurtleLens Color
Clear
Color Code
8423Color Description
Havana Red TurtleLens Color
Clear
Color Code
8423Color Description
Havana Red TurtleLens Color
Clear
Frame Color
BlackColor Code
8324Color Description
Black/transparentLens Color
Clear
Color Code
8111Color Description
Grey TransparentLens Color
Clear
Frame Color
BrownColor Code
8171Color Description
Brown TransparentLens Color
Clear
Color Code
8111Color Description
Grey TransparentLens Color
Clear
Frame Color
BrownColor Code
8171Color Description
Brown TransparentLens Color
Clear
Frame Color
BlackColor Code
8324Color Description
Black/transparentLens Color
Clear
Size Details
Size DetailsBridge Width
19.00Temple Length
145.00Size
5519-145
Bridge Width
19.00Temple Length
145.00Size
5519-145
Bridge Width
19.00Temple Length
145.00Size
5319-145
Bridge Width
19.00Temple Length
145.00Size
5319-145
Bridge Width
19.00Temple Length
145.00Size
5319-145
Bridge Width
19.00Temple Length
145.00Size
5519-145
Bridge Width
19.00Temple Length
145.00Size
5519-145
Bridge Width
19.00Temple Length
145.00Size
5519-145
Bridge Width
19.00Temple Length
145.00Size
5319-145
Bridge Width
19.00Temple Length
145.00Size
5319-145
Bridge Width
19.00Temple Length
145.00Size
5319-145
Bridge Width
19.00Temple Length
145.00Size
5519-145
Bridge Width
19.00Temple Length
145.00Size
5319-145
Bridge Width
19.00Temple Length
145.00Size
5319-145
Bridge Width
19.00Temple Length
145.00Size
5519-145
Bridge Width
19.00Temple Length
145.00Size
5519-145
Bridge Width
19.00Temple Length
145.00Size
5319-145
Bridge Width
19.00Temple Length
145.00Size
5519-145
Bridge Width
19.00Temple Length
145.00Size
5319-145
Bridge Width
19.00Temple Length
145.00Size
5319-145
Bridge Width
19.00Temple Length
145.00Size
5519-145
Bridge Width
19.00Temple Length
145.00Size
5519-145
Bridge Width
19.00Temple Length
145.00Size
5319-145
Bridge Width
19.00Temple Length
145.00Size
5519-145
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At Designer Optics, our skilled and experienced lab opticians play a crucial role in ensuring the quality and accuracy of your eyewear. With over 30 combined years of experience and full licensure, they review each prescription carefully and are equipped to answer any questions you may have.
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For personalized support, simply send an email to Support@designeroptics.com to request a call back from one of our friendly opticians.
Frequently Asked Questions
Are Ray-Ban 5421 eyeglasses prescription-ready?
Yes, the Ray-Ban RB5421 frames are fully prescription-ready and can accommodate single vision, progressive, bifocal, and specialty lenses including blue-light filtering and Transitions. The acetate construction supports a wide range of prescription strengths, and the frame's 53mm and 55mm lens widths provide ample space for optical customization.
What are the benefits of spring hinges on the Ray-Ban 5421?
Spring hinges allow the temples to flex outward beyond the standard 90-degree angle, providing a more comfortable and adaptable fit. They reduce pressure on your temples and ears, improve durability by preventing frame misalignment, and make the glasses easier to put on and take off without causing damage to the frame.
What sizes are available for the Ray-Ban RB5421?
The RB5421 is available in two lens widths: 53mm and 55mm. Both sizes feature a 19mm bridge width and 145mm temple length. The 53mm works well for small to medium faces, while the 55mm suits medium to larger faces. The lens height is approximately 41mm, providing good vertical coverage.
How durable are acetate eyeglass frames?
Acetate frames are highly durable and superior to standard plastic. Acetate is a plant-based material that's lightweight, flexible, and resistant to everyday wear and tear. It maintains its shape over time, offers rich color depth, and is hypoallergenic, making it comfortable for extended wear and suitable for people with sensitive skin.
What face shapes work best with the Ray-Ban 5421?
The rectangular shape of the RB5421 complements oval, round, and heart-shaped faces by adding structure and definition. The clean lines and balanced proportions make these frames versatile for both men and women. The unisex design and two size options ensure a flattering fit across different face widths.
How do I care for my Ray-Ban 5421 acetate frames?
Clean acetate frames with a soft microfiber cloth and mild soap and water. Avoid harsh chemicals or alcohol-based cleaners that can damage the finish. Store them in a protective case when not in use. The spring hinges may occasionally need cleaning with a soft brush to remove debris and maintain smooth operation.
Compare With Similar Frames
How the Ray-Ban 5421 Eyeglasses stacks up against the closest alternatives we carry.
- Wider, bolder rectangular shape for a more intellectual, statement look
- Thicker rims provide extra durability and visual presence
- Established model with proven track record and wide availability
- Extremely lightweight construction for maximum comfort
- Sleek, minimalist lines emphasize versatility
- Similar price point to the 5421
Read the full comparison
Ray-Ban 5421 vs. 5228 vs. 7017: Which Rectangular Frame Is Right for You?
Choosing between Ray-Ban's rectangular acetate frames comes down to your style preference and how you'll wear them. All three models are prescription-ready, built from quality acetate, and priced similarly—but each has a distinct personality.
Ray-Ban 5421: Modern and Streamlined
The RB5421 strikes a balance between presence and versatility. Its slim temples and clean rectangular lines give it a contemporary edge that works in professional settings without looking too corporate. The spring hinges add practical durability, and the range of colors—from transparent to striped havana—lets you choose how bold you want to go. If you want frames that transition easily from work to weekend, the 5421 is your best bet.
Ray-Ban 5228: Bold and Intellectual
The Ray-Ban 5228 brings more visual weight. Its thicker rims and wider rectangular shape make a statement—think classic intellectual style. It's one of Ray-Ban's most popular optical frames for good reason: it's comfortable, durable, and has a proven track record. The trade-off? It's less subtle than the 5421 and may feel bulkier during all-day wear. Choose the 5228 if you want frames that announce themselves.
Ray-Ban 7017: Lightweight and Minimal
The Ray-Ban 7017 takes the minimalist route. It's lighter and sleeker than both the 5421 and 5228, with streamlined rectangular lines that emphasize function over flash. If you prefer frames that almost disappear on your face or you need something ultra-comfortable for long hours, the 7017 delivers. The downside is less color variety and a thinner build that some may find too understated.
Our Recommendation
For most buyers, the Ray-Ban 5421 offers the best all-around package: modern styling, spring hinge durability, and enough visual presence to look intentional without dominating your face. It's the Goldilocks option—not too bold, not too minimal, just right for everyday wear across different contexts.
At a Glance
Ray-Ban 5228 Eyeglasses
Pros:
- Wider, bolder rectangular shape for a more intellectual, statement look
- Thicker rims provide extra durability and visual presence
- Established model with proven track record and wide availability
- Slightly lower starting price point
Cons:
- Bulkier appearance may feel less modern than the 5421's slim profile
- Thicker frames can feel heavier during extended wear
- Less versatile across different style contexts (more casual/bold)
Ray-Ban 7017 Eyeglasses
Pros:
- Extremely lightweight construction for maximum comfort
- Sleek, minimalist lines emphasize versatility
- Similar price point to the 5421
- Professional aesthetic works well in formal settings
Cons:
- May lack the visual presence some wearers prefer
- Fewer color and pattern options compared to the 5421
- Thinner construction may feel less substantial