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Flexon CLARK 600 Eyeglasses - designeroptics.com
Flexon CLARK 600 Eyeglasses
Add To Cart For Lowest Price
$116.31
$170.00

You save 32%

Color

Size

ADD PRESCRIPTION

Flexon CLARK 600 Eyeglasses

210 - Brown / 50

  • Ships within 1 to 5 Days

    Shipping information is provided by the manufacturer.

March_750666976552
ADD PRESCRIPTION
Flexon CLARK 600 Eyeglasses Flexon CLARK 600 Eyeglasses Flexon CLARK 600 Eyeglasses Flexon CLARK 600 Eyeglasses
Flexon CLARK 600 Eyeglasses
Flexon CLARK 600 Eyeglasses
Flexon CLARK 600 Eyeglasses
Flexon CLARK 600 Eyeglasses
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    Free Shipping
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    Price Match
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ADD PRESCRIPTION
Add To Cart For Lowest Price
$116.31
$170.00

You save 32%

Color

Size

210 - Brown / 50
210 - Brown / 52
001 - Black Chrome / 52
033 - Gunmetal / 50
033 - Gunmetal / 52
001 - Black Chrome / 50

*Swipe to view more color variants

  • Free Shipping
    Free Shipping
  • Price Match
    Price Match
  • Easy Returns
    Easy Returns
  • Licensed Opticians
    Licensed Opticians
DESCRIPTION RATINGS & REVIEWS PRESCRIPTION GUIDE

The Flexon CLARK 600 Eyeglasses combine classic oval styling with Flexon's revolutionary memory metal technology for prescription eyewear that's built to last. These full-rim metal frames are engineered from a lightweight titanium-nickel alloy—the same material NASA developed for missile heat shields—allowing them to flex, bend, and twist back to their original shape without breaking.

Memory Metal Technology That Actually Works

Flexon's proprietary memory metal isn't marketing hype. The frames feature technologically advanced alloy in both the bridge and temples, making them virtually indestructible for everyday wear. Drop them, sit on them, or accidentally bend them in your bag—they'll bounce back. Real owners back this up: one reviewer noted their Flexon 600 frames survived three years of a toddler's grabbing, jumping, and throwing.

The CLARK 600 weighs significantly less than conventional metal frames, so you can wear them all day without pressure marks or discomfort. The adjustable silicone nose pads let you dial in a custom fit that stays put, whether you're working at a desk or staying active.

Oval Frames for Versatile Style

The oval shape is one of the most universally flattering frame styles. It softens angular features on square, rectangular, and heart-shaped faces while maintaining a professional, understated look. Available in four finishes—Black Chrome, Brown, Gunmetal, and Navy—and two lens widths (50mm and 52mm), the CLARK 600 accommodates a range of face sizes and prescription types, including single vision, progressive, and bifocal lenses.

These are prescription-ready frames designed for men who need durable eyeglasses that don't sacrifice style. The full-rim construction protects your lenses while the slim metal temples and 140mm length provide a secure, balanced fit. Whether you're replacing broken frames or upgrading to something more resilient, the Flexon CLARK 600 delivers the durability and comfort that conventional metal frames can't match.

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Customer Reviews

Based on 6 reviews
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(6)
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R
Rick
Wonderful

The frames are very nice and exactly what I was looking for, at a price that fits my budget. I’m very satisfied with my purchase.

D
Dennis J Carmon
Eye can see again!

I dropped my glasses on a concrete floor and broke my frames. Designer Optics had the frames I needed. I ordered online but had a question later so I called and talked to support. They were very helpful and I received my frames within a few days. I’m very satisfied with my purchase!

J
Jamie Cornwell
just what I was looking for! 👀

the frames I received were just what I wanted. I screwed up on the order and they helped me out by correcting my mistake. the price was 100 dollars less than what the optical store in town wanted for the same frames, and they came in a nice case. thank you!

E
Edward Williams

Flexon CLARK 600 Eyeglasses

T
Timothy Fabre

Flexon CLARK 600 Eyeglasses

12
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Frequently Asked Questions

Are Flexon CLARK 600 eyeglasses compatible with prescription lenses?

Yes, the Flexon CLARK 600 is fully prescription-ready and compatible with single vision, progressive, and bifocal lenses. The full-rim design provides maximum stability for all prescription types, and the frames work well with higher prescriptions due to the adjustable nose pads that help distribute lens weight evenly.

What is Flexon memory metal and how durable is it?

Flexon memory metal is a titanium-nickel alloy originally developed by NASA for missile heat shields. The frames can be flexed, bent, or twisted and will return to their original shape, making them significantly more durable than conventional metal frames. Customer reviews report Flexon frames lasting 3-4 years even with rough daily handling.

What face shapes work best with the Flexon CLARK 600 oval frames?

Oval frames are highly versatile and work well for most face shapes, particularly square, rectangular, and heart-shaped faces. The rounded oval shape softens angular features while the full-rim design provides enough structure to balance rounder faces. The key is choosing a frame width that matches or slightly exceeds your cheekbone width—the CLARK 600 offers 50mm and 52mm lens widths to accommodate different face sizes.

Do the Flexon CLARK 600 frames have adjustable nose pads?

Yes, the CLARK 600 features adjustable silicone nose pads mounted on flexible arms. These can be adjusted closer together, farther apart, higher, or lower to customize the fit and distribute frame weight evenly across your nose. This is especially helpful for heavier prescriptions or for achieving a secure fit during active wear.

What sizes are available for the Flexon CLARK 600?

The Flexon CLARK 600 is available in two sizes: 50-19-140 and 52-19-140. The first number is the lens width (50mm or 52mm), the second is the bridge width (19mm), and the third is the temple length (140mm). Both sizes feature the same bridge and temple measurements, so the choice comes down to your lens width preference and face size.

How do I care for Flexon memory metal frames?

Flexon frames require minimal maintenance due to their durable construction. Clean them with a microfiber cloth and lens cleaner, and store them in a protective case when not in use. The memory metal is resistant to corrosion and won't lose its shape over time. The adjustable nose pads and end pieces can be fine-tuned by an optician for a custom fit as needed.

Compare With Similar Frames

How the Flexon CLARK 600 Eyeglasses stacks up against the closest alternatives we carry.

This product
Flexon CLARK 600 Eyeglasses
Flexon Flexon CLARK 600 Eyeglasses $170.00$116.31
Flexon EINSTEIN 600 Eyeglasses - designeroptics.com
Flexon Flexon EINSTEIN 600 Eyeglasses $170.00$109.54
  • Rectangular shape better suits round or oval faces
  • Bowed temples accommodate wider head sizes more comfortably
  • Larger lens options (52mm and 54mm) for bigger faces
View frame →
Flexon NATHANIEL 600 Eyeglasses - designeroptics.com
Flexon Flexon NATHANIEL 600 Eyeglasses $170.00$116.31
  • Modified rectangular shape with embossed brick pattern temples adds visual interest
  • Slightly narrower bridge (17mm vs 19mm) may fit smaller noses better
  • Available in unique colors like Dark Brown and Slate
View frame →
Flexon 603 Eyeglasses - designeroptics.com
Flexon Flexon 603 Eyeglasses $150.00$102.15
  • More affordable at $102.15 (saves $14+ vs CLARK 600)
  • Same Flexon memory metal technology and durability
  • Rectangular shape with adjustable nose pads
View frame →
Read the full comparison

Flexon CLARK 600 vs. EINSTEIN 600 vs. NATHANIEL 600: Which 600 Series Frame Is Right for You?

All three models share Flexon's revolutionary memory metal technology and similar pricing, but they serve different style preferences and face shapes. Here's how to choose.

Frame Shape: The Key Difference

The CLARK 600's oval shape is the most versatile option, working well across square, rectangular, heart-shaped, and even some round faces. It softens angular features while maintaining a professional look. If you're unsure which frame shape suits you best, oval is the safest bet.

The EINSTEIN 600's rectangular shape with bowed temples is designed for round or oval faces and wider head sizes. The bowed temples provide extra room and comfort if you've struggled with frames feeling too tight. It projects a more contemporary, business-forward aesthetic than the CLARK 600.

The NATHANIEL 600's modified rectangular shape splits the difference, offering a rectangular silhouette with embossed brick-pattern temples for added visual interest. It's the boldest design of the three, ideal if you want your eyewear to make more of a statement.

Fit and Sizing Considerations

The CLARK 600 features a 19mm bridge width, making it suitable for average to wider nose bridges. The NATHANIEL 600's narrower 17mm bridge may fit smaller noses more comfortably. The EINSTEIN 600's bowed temples are specifically engineered for wider heads—if standard frames pinch your temples, this is your best option.

All three models offer adjustable nose pads and 140mm temple length, and all are compatible with progressive, bifocal, and single vision prescriptions.

Why Choose the CLARK 600?

The CLARK 600 is the most universally flattering frame in the comparison. Its oval shape works across the widest range of face shapes, and the understated design won't compete with your features or wardrobe. If you want durable, comfortable eyeglasses that simply work—without bold styling statements—the CLARK 600 delivers exactly that.

At a Glance

Flexon EINSTEIN 600 Eyeglasses

Pros:

  • Rectangular shape better suits round or oval faces
  • Bowed temples accommodate wider head sizes more comfortably
  • Larger lens options (52mm and 54mm) for bigger faces
  • More contemporary, professional appearance

Cons:

  • Less versatile across different face shapes than oval CLARK 600
  • Rectangular shape can emphasize angular features on square faces
  • Bowed temples may not suit everyone's aesthetic preference

Flexon NATHANIEL 600 Eyeglasses

Pros:

  • Modified rectangular shape with embossed brick pattern temples adds visual interest
  • Slightly narrower bridge (17mm vs 19mm) may fit smaller noses better
  • Available in unique colors like Dark Brown and Slate
  • Same progressive lens compatibility and memory metal durability

Cons:

  • Rectangular shape less versatile than CLARK 600's oval design
  • Embossed temple detailing may be too bold for minimalist preferences
  • Narrower bridge may not suit wider nose bridges as well

Flexon 603 Eyeglasses

Pros:

  • More affordable at $102.15 (saves $14+ vs CLARK 600)
  • Same Flexon memory metal technology and durability
  • Rectangular shape with adjustable nose pads
  • Good for round or oval faces seeking sharper angles

Cons:

  • Rectangular shape less universally flattering than CLARK 600 oval
  • Fewer color options available
  • May lack some of the refined detailing of the 600 series

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