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5% OFF ALL STORE - USE COUPON CODE "NOVEMBER26" EXCLUDING BRANDS: RAY-BAN, OAKLEY, COSTA DEL MAR, PERSOL, PRADA, RAY-BAN META, OAKLEY META & MIU MIU
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Easyclip EC421 Eyeglasses - designeroptics.com
Easyclip EC421 Eyeglasses
Add To Cart For Lowest Price
$135.37
$179.98

You save 25%

Color

ADD PRESCRIPTION

Lenses from $29.99 · Ready in 2–7 business days

Easyclip EC421 Eyeglasses

10 - Brown & Crystal Marbled

  • Ships within 1 to 5 Days

    Shipping information is provided by the manufacturer.

AE_EC421_10_5215
ADD PRESCRIPTION

Lenses from $29.99 · Ready in 2–7 business days

Easyclip EC421 Eyeglasses Easyclip EC421 Eyeglasses Easyclip EC421 Eyeglasses 10 - Brown & Crystal Marbled 10 - Brown & Crystal Marbled 10 - Brown & Crystal Marbled 50 - Blue & Crystal Blue Marbled 50 - Blue & Crystal Blue Marbled 50 - Blue & Crystal Blue Marbled 30 - Red & Crystal White Marbled 30 - Red & Crystal White Marbled 30 - Red & Crystal White Marbled Easyclip EC421 Eyeglasses Easyclip EC421 Eyeglasses Easyclip EC421 Eyeglasses
Easyclip EC421 Eyeglasses
Easyclip EC421 Eyeglasses
Easyclip EC421 Eyeglasses
10 - Brown & Crystal Marbled
10 - Brown & Crystal Marbled
10 - Brown & Crystal Marbled
50 - Blue & Crystal Blue Marbled
50 - Blue & Crystal Blue Marbled
50 - Blue & Crystal Blue Marbled
30 - Red & Crystal White Marbled
30 - Red & Crystal White Marbled
30 - Red & Crystal White Marbled
Easyclip EC421 Eyeglasses
Easyclip EC421 Eyeglasses
Easyclip EC421 Eyeglasses
  • Free Shipping
    Free Shipping
  • Price Match
    Price Match
  • Easy Returns
    Easy Returns
  • Licensed Opticians
    Licensed Opticians
ADD PRESCRIPTION

Lenses from $29.99 · Ready in 2–7 business days

Add To Cart For Lowest Price
$135.37
$179.98

You save 25%

Color

10 - Brown & Crystal Marbled
10 - Brown & Crystal Marbled
50 - Blue & Crystal Blue Marbled
50 - Blue & Crystal Blue Marbled
30 - Red & Crystal White Marbled
30 - Red & Crystal White Marbled
030 - CLIP
030 - CLIP
010 - CLIP
010 - CLIP
050 - CLIP
050 - CLIP

*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 Easyclip EC421 eyeglasses combine prescription-ready frames with patented magnetic clip-on technology that transforms your glasses into sunglasses in seconds. Built by Aspex Eyewear, the originators of magnetic eyewear, these square acetate frames use high-powered neodymium magnets that deliver a bond ten times stronger than standard ferrous magnets—secure enough for daily wear, yet easy to attach or remove with one hand.

Instant Sun Protection Without the Hassle

The EC421 solves a problem prescription wearers know well: constantly swapping between glasses and sunglasses, or relying on transition lenses that won't darken behind a windshield. The magnetic clip-on attaches flush to the front of the frame with no visible hardware, sitting close to your prescription lenses to maintain your exact field of vision. Remove it just as fast when you step indoors. Each frame includes a matching clip-on in your chosen color—brown and crystal marbled, blue and crystal blue marbled, or red and crystal white marbled—plus additional clip-ons are available separately.

The full-rim acetate construction is lightweight and durable, with a 52mm lens width, 15mm bridge, and 140mm temples (52-15-140). The square shape works well on oval and round faces, offering structure and definition. Decorative ribbed temple detailing adds a refined touch. These frames are prescription-ready and accept single-vision, progressive, and most lens types from your optician.

Why Magnetic Beats Transition Lenses

Transition lenses require UV light to activate, which means they stay clear inside your car—the windshield blocks the UV rays they need. Magnetic clip-ons work anywhere, anytime, regardless of UV exposure. You also get instant tint control instead of waiting for photochromic lenses to adjust, and you can choose polarized clip-ons for glare reduction while driving or on the water. The cost advantage is significant too: instead of paying for a second pair of prescription sunglasses, you're adding sun protection to the frames you already own.

Easyclip's magnetic system is designed for real life—no scratching your lenses with spring clips, no fumbling with two hands while you're holding coffee or car keys. The magnets are embedded in the frame and clip-on, so there's nothing to break or wear out. Replacement clip-ons are available if you want a different tint or if you lose one, and the frames carry a one-year manufacturer's warranty. Whether you're commuting, working outdoors, or just tired of juggling two pairs of glasses, the EC421 delivers the versatility you need without compromise.

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Frequently Asked Questions

Are the Easyclip EC421 frames prescription-ready?

Yes, the EC421 frames are fully prescription-ready and accept single-vision, progressive, bifocal, and most other lens types. The frames measure 52-15-140 (52mm lens width, 15mm bridge, 140mm temple length) and are made from durable acetate. You can have your prescription lenses installed by any optician or through our in-house lab.

How do the magnetic clip-ons attach to the EC421 frames?

The EC421 uses patented magnetic technology with high-powered neodymium magnets embedded in both the frame and the clip-on. These magnets are ten times stronger than standard ferrous magnets, creating a secure bond that holds during daily activities. You can attach or remove the clip-on with one hand in under three seconds—the magnets automatically align and snap into place.

Can I buy replacement or additional clip-ons for the EC421?

Yes, replacement and additional clip-ons are available for purchase separately. Each EC421 frame comes with one matching magnetic clip-on in your chosen color, but you can order extra clip-ons in different tints (including polarized options) if you lose one or want more variety. Replacement clip-ons are model-specific and designed to fit the EC421 perfectly.

Are magnetic clip-ons better than transition lenses?

Magnetic clip-ons offer several advantages over transition lenses. Most importantly, they work inside cars—transition lenses require UV light to darken, and windshields block UV rays, leaving your lenses clear while driving. Clip-ons also provide instant tint control (no waiting for lenses to adjust), work in any lighting condition, and cost significantly less than purchasing separate prescription sunglasses.

What face shapes work best with square frames like the EC421?

Square frames like the EC421 work best on oval and round face shapes, where they add structure and definition. The 52mm lens width offers a medium fit suitable for most adults. If you have a square face with a strong jawline, you may prefer rounder frame shapes that soften angular features, though personal style always matters more than strict guidelines.

How do I clean and care for my EC421 frames and clip-ons?

Clean both the frames and magnetic clip-ons regularly with a microfiber cloth and lens cleaner designed for eyewear. Avoid using paper towels or clothing, which can scratch the lenses or acetate. When attaching or removing the clip-on, hold the frame steady to avoid bending. Store the clip-on in its case when not in use to prevent scratches, and keep the magnets away from credit cards or electronic devices.

Compare With Similar Frames

How the Easyclip EC421 Eyeglasses stacks up against the closest alternatives we carry.

This product
Easyclip EC421 Eyeglasses
Easyclip Easyclip EC421 Eyeglasses $179.98$69.22
Easyclip EC408 Eyeglasses - designeroptics.com
Easyclip Easyclip EC408 Eyeglasses $179.98$69.22
  • Same patented magnetic clip-on technology
  • Same price range ($69-$135)
  • May offer different frame shape or size options
View frame →
Read the full comparison

Easyclip EC421 vs EC408: Which Frame Is Right for You?

Both the EC421 and EC408 eyeglasses feature Easyclip's patented magnetic clip-on technology with neodymium magnets that are ten times stronger than standard magnets. They're in the same price range and both accept prescription lenses, so your decision comes down to frame style and fit.

The EC421 offers a full-rim square acetate frame in marbled colorways (brown/crystal, blue/crystal, red/crystal white) with a 52-15-140 measurement. The full-rim construction provides maximum durability and a bold, structured look that works well on oval and round faces. The square shape adds definition and the marbled acetate patterns give each frame a unique, sophisticated appearance.

The EC408 may offer a different frame shape, rim style, or size—check the specific measurements and photos to compare. Both models use the same magnetic technology, so clip-ons attach and remove with one hand in seconds, and both work better than transition lenses for driving (since windshields block the UV light transition lenses need).

Choose the EC421 if: You want a full-rim square frame with marbled acetate patterns, prefer a medium 52mm lens width, and like the structured look of square frames on oval or round faces.

Choose the EC408 if: You prefer a different frame shape or rim style (such as half-rim or rimless), need different measurements, or want alternative colorway options.

Both frames come with a matching magnetic clip-on and carry a one-year manufacturer's warranty. Replacement clip-ons are available separately for both models, and both are prescription-ready for single-vision, progressive, or bifocal lenses.

At a Glance

Easyclip EC408 Eyeglasses

Pros:

  • Same patented magnetic clip-on technology
  • Same price range ($69-$135)
  • May offer different frame shape or size options
  • Compatible with same replacement clip-on ecosystem

Cons:

  • Different frame style may not suit all face shapes
  • Specific measurements and colorways differ from EC421
  • May have different rim style (half-rim vs full-rim)