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The Miraflex SAM51 Eyeglasses deliver Italian-engineered durability in a flexible, prescription-ready butterfly frame designed for active lifestyles. Crafted from virtually unbreakable, BPA-free plastic with zero metal parts, these full-rim frames feature an anatomically designed bridge that distributes weight comfortably without traditional nose pads—eliminating a common pressure point. The 51mm lens width and adjustable elastic headstrap ensure a secure, customized fit for adults and teens.
Part of Miraflex's renowned Flexible & Safe collection (now under the FlexFrames Standard Collection), the SAM51 is built to withstand daily wear while remaining lightweight and hypoallergenic. Available in six versatile colors including Dark Gray, Navy Blue, Lavender, Black, and Dark Blue, these frames accommodate prescription lenses with ease. Whether you need durable eyewear for sports, special needs, or simply prefer frames that won't break under pressure, the SAM51 combines safety, comfort, and European craftsmanship at an exceptional value.
Product Details
Model
SAM51Shape
Gender
Bridge Type
Rim Type
Age Group
Color Details
Frame Color
GrayColor Code
JColor Description
Dark Gray
Frame Color
BlueColor Code
DSColor Description
Navy Blue
Frame Color
PurpleColor Code
LColor Description
Lavender
Frame Color
BlackColor Code
JSColor Description
Black
Frame Color
BlueColor Code
DColor Description
Dark Blue
Frame Color
BlueColor Code
VMColor Description
Dark Turquoise
Size Details
Bridge Width
17.30Temple Length
140.00Size
5119-140
Bridge Width
17.30Temple Length
140.00Size
5119-140
Bridge Width
17.30Temple Length
140.00Size
5119-140
Bridge Width
17.30Temple Length
140.00Size
5119-140
Bridge Width
17.30Temple Length
140.00Size
5119-140
Bridge Width
17.30Temple Length
140.00Size
5119-140
My son has a ginormous head. He is a very large man and he is special needs his heat is a 8 1/4 so glasses usually are very hard to find and when we do they ..barely fit? Bend strangely. It's always just meh. My son has a developmental disorder called Autism but he is a level 3 non verbal person who has extreme needs due to his size. He is huge. So again, anything for him is never for him it's just barely suitable. Ok... now when I say he put these on and his whole world lit up like Christmas was brand new and he looked DIRECTLY into my eyes and said MA! I felt like he was just so happy to finally have glasses that were really great. He's treated them nicely (he usually gets angry because they arent comfortable or they distort his vision maybe? I cant be sure but he usually tosses them or destroys them really quickly. Not these. They were like glued to his face and have been. He doesnt want to take them off to even sleep. So needless to say 10 out of 10 would recommend
asses are as we ordered.
Total scam false advertisement. They claim to sell MiraFlex on the website, but NOT true! They will ship similar name brand hopping you don’t notice, but you actually get garbage for your money!
I love the Miraflex brand. My son has been wearing this brand since he was 5yrs old. Completely unbreakable and come in multiple colors. Now that he’s a teenager, it’s been hard to find this brand. That I’m glad Designer Optics offers them.
Excelente producto lastima que ya esten descontinuados
My son has a ginormous head. He is a very large man and he is special needs his heat is a 8 1/4 so glasses usually are very hard to find and when we do they ..barely fit? Bend strangely. It's always just meh. My son has a developmental disorder called Autism but he is a level 3 non verbal person who has extreme needs due to his size. He is huge. So again, anything for him is never for him it's just barely suitable. Ok... now when I say he put these on and his whole world lit up like Christmas was brand new and he looked DIRECTLY into my eyes and said MA! I felt like he was just so happy to finally have glasses that were really great. He's treated them nicely (he usually gets angry because they arent comfortable or they distort his vision maybe? I cant be sure but he usually tosses them or destroys them really quickly. Not these. They were like glued to his face and have been. He doesnt want to take them off to even sleep. So needless to say 10 out of 10 would recommend
asses are as we ordered.
Total scam false advertisement. They claim to sell MiraFlex on the website, but NOT true! They will ship similar name brand hopping you don’t notice, but you actually get garbage for your money!
I love the Miraflex brand. My son has been wearing this brand since he was 5yrs old. Completely unbreakable and come in multiple colors. Now that he’s a teenager, it’s been hard to find this brand. That I’m glad Designer Optics offers them.
Excelente producto lastima que ya esten descontinuados
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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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Frequently Asked Questions
Are Miraflex SAM51 eyeglasses suitable for adults?
Yes, the SAM51 is designed for adults and older teens. With a 51mm lens width and 140mm temple length, these frames fit adult faces comfortably. Many customers report wearing Miraflex frames from childhood through teenage years and beyond due to their durability and adjustable fit.
What makes Miraflex frames unbreakable?
Miraflex frames are made from a highly flexible, BPA-free plastic polymer that bends without breaking. The single-piece construction with no metal parts means there are no screws to loosen or nose pads to break. This material is impact-resistant and designed to withstand drops, twisting, and the rigors of active wear.
Can I get prescription lenses in the SAM51 frames?
Absolutely. The Miraflex SAM51 is fully prescription-ready and can accommodate single vision, bifocal, and even high-prescription lenses. The frames are designed to hold corrective lenses securely, and the anatomically designed bridge helps maintain optimal optical center alignment for clear vision.
Does the SAM51 come with an elastic strap?
Yes, all Miraflex Flexible & Safe frames include a matching adjustable elastic headstrap that wraps comfortably around the head. This strap keeps the glasses securely in place during sports and active movement. Replacement straps are available separately if needed over time.
Are Miraflex frames safe for people with allergies?
Yes, Miraflex frames are hypoallergenic and free from BPA, latex, and rubber. The soft, flexible material is gentle on sensitive skin and eliminates the metal components that can cause allergic reactions in some wearers. This makes them ideal for people with metal sensitivities or skin allergies.
What is the relationship between Miraflex and FlexFrames?
Miraflex has been rebranded as FlexFrames under new ownership, but the frames retain the same signature Italian design, materials, and durability. The SAM51 and other classic Miraflex models are still available under their original names, ensuring customers can find the trusted frames they know and love.
Compare With Similar Frames
How the Miraflex SAM51 Eyeglasses stacks up against the closest alternatives we carry.
- Same unbreakable Italian construction
- Similar price point ($44-$53)
- Alternative frame shape for different face types
- Premium Miraflex construction
- More traditional eyeglass styling
- Same flexible, unbreakable material
Read the full comparison
Miraflex SAM51 vs. Other Miraflex Frames: Which Is Right for You?
If you're drawn to the Miraflex SAM51's unbreakable construction and comfortable fit, you might also consider other frames in the Miraflex collection. Here's how the SAM51 compares to similar options in our catalog.
SAM51 vs. Miraflex MIKE0
Both the SAM51 and MIKE0 are part of Miraflex's Flexible & Safe collection, featuring the same virtually indestructible BPA-free plastic, anatomically designed bridge, and adjustable elastic strap. The key difference is frame shape: the SAM51 offers a butterfly silhouette that flatters wider faces and provides excellent coverage, while the MIKE0 presents an alternative shape that may better suit different facial structures. At similar price points ($44-$53), your choice comes down to which shape complements your features best.
SAM51 vs. Miraflex 4006
The Miraflex 4006 represents a step up in the collection with more traditional styling and premium finishes, priced between $51-$76. While it maintains Miraflex's signature flexible, durable construction, the 4006 offers a more conventional eyeglass aesthetic without the sporty elastic strap system. Choose the SAM51 if you prioritize active wear, maximum security, and value, or opt for the 4006 if you prefer a more traditional look for everyday professional wear.
Why Choose the SAM51?
The SAM51 stands out as an exceptional value in the Miraflex lineup. At just $44, you get Italian-made quality, virtually unbreakable construction, and the security of an adjustable elastic strap—features that make it ideal for active adults, athletes, or anyone who needs glasses that can keep up with a demanding lifestyle. The butterfly shape offers generous coverage and a contemporary look, while six color options ensure you'll find a style that suits your personality.
At a Glance
Miraflex MIKE0 Eyeglasses
Pros:
- Same unbreakable Italian construction
- Similar price point ($44-$53)
- Alternative frame shape for different face types
- Includes elastic strap system
Cons:
- Different shape may not suit all preferences
- Slightly higher price on some variants
Miraflex 4006 Eyeglasses
Pros:
- Premium Miraflex construction
- More traditional eyeglass styling
- Same flexible, unbreakable material
Cons:
- Higher price point ($51-$76)
- May not include elastic strap
- Less sporty design than SAM51



