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The Spy Optic Logan 670939 sunglasses deliver serious performance in a bold wrap-around design. Built from lightweight yet virtually indestructible Grilamid—a high-strength polymer known for flexibility and impact resistance—these frames handle everything from job sites to mountain trails. The full-rim rectangular wrap design provides excellent peripheral coverage, blocking wind and glare from every angle.
Spy Happy Lens Technology
What sets the Logan apart is Spy's Happy Lens technology. Unlike conventional sunglasses that block all blue light, Happy Lenses allow beneficial long-wave blue light to reach your eyes while filtering out harmful UV and short-wave blue light. This selective filtering mechanism targets specific wavelengths, allowing certain blue light through while blocking others. The lenses also enhance color and contrast, so you see richer, more accurate tones without distortion. Available in both polarized and non-polarized options across multiple tints and mirror finishes, including Happy Gray Green, Happy Bronze Polar, and Happy Boost variants.
The 8-base polycarbonate ARC (Accurate Radius Curvature) lenses follow the natural curve of your eye, reducing eyestrain and delivering crystal-clear, distortion-free vision. All lenses provide 100% UV protection. High-quality pin hinges ensure smooth operation and long-term durability. Select variants carry ANSI Z87.1 certification for high-impact resistance, making them suitable for industrial work, shooting sports, and other safety-critical activities.
Fit and Sizing
The Logan measures 61-14-127 (lens width-bridge-temple length in millimeters), fitting most small-to-medium faces. The iconic Spy cross logo appears subtly on each temple. Prescription lenses are available through authorized retailers.
Product Details
Product DetailsModel
LoganGender
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsFrame Color
BlackColor Code
243863Color Description
Matte BlackLens Color
Happy Gray Green
Frame Color
BlackColor Code
038863Color Description
BlackLens Color
Happy Gray Green
Color Code
204352Color Description
Clear SmokeLens Color
Happy Gray Green with Silver Mirror
Frame Color
BlackColor Code
243094Color Description
Matte BlackLens Color
Clear
Frame Color
BlackColor Code
038864Color Description
BlackLens Color
Happy Gray Green Polar
Frame Color
BlackColor Code
374861Color Description
Matte BlackLens Color
Happy Bronze Polar with Green Spectra
Frame Color
BlackColor Code
973864Color Description
Soft Matte BlackLens Color
Happy Gray Green Polar
Frame Color
BlackColor Code
973863Color Description
Soft Matte BlackLens Color
Happy Gray Green
Color Code
0000001Color Description
Sosi Matte BlackLens Color
Happy Gray Green
Frame Color
BlackColor Code
0000194Color Description
Matte BlackLens Color
Happy Boost Bronze Polar Ice Blue Spectra Mirror
Frame Color
BlackColor Code
0000211Color Description
Matte BlackLens Color
Happy Boost Polar Orange Mirror
Color Code
0000082Color Description
Matte Black Gloss Black FlamesLens Color
Happy Gray Green Polar Black Mirror
Color Code
0000083Color Description
Matte Black Orange FlamesLens Color
Happy Gray Green Red Mirror
Frame Color
BlackColor Code
0000306Color Description
Matte BlackLens Color
Happy Photochromic
Frame Color
BlackColor Code
0000101Color Description
Matte BlackLens Color
Happy Gray Green
Color Code
0000002Color Description
Sosi BlackLens Color
Happy Gray Green ANSI
Size Details
Size DetailsLens Width
61mmBridge Width
14mmTemple Length
127mmSize
6114-127
Lens Width
61mmBridge Width
14mmTemple Length
127mmSize
6114-127
Lens Width
61mmBridge Width
14mmTemple Length
127mmSize
6114-127
Lens Width
61mmBridge Width
14mmTemple Length
127mmSize
6114-127
Lens Width
61mmBridge Width
14mmTemple Length
127mmSize
6114-127
Lens Width
61mmBridge Width
14mmTemple Length
127mmSize
6114-127
Lens Width
61mmBridge Width
14mmTemple Length
127mmSize
6114-127
Lens Width
61mmBridge Width
14mmTemple Length
127mmSize
6114-127
Lens Width
61mmBridge Width
14mmTemple Length
127mmSize
6013-124
Lens Width
61mmBridge Width
14mmTemple Length
127mmSize
6013-124
Lens Width
61mmBridge Width
14mmTemple Length
127mmSize
6013-124
Lens Width
61mmBridge Width
14mmTemple Length
127mmSize
6013-124
Lens Width
61mmBridge Width
14mmTemple Length
127mmSize
6013-124
Size
6013-124
Size
6114-127
Lens Width
61mmBridge Width
14mmTemple Length
127mmSize
6013-124
I ordered some sunglasses on a Friday with priority shipping of 2-7 business days for an additional and unbelievable rate of $14.99 (keep in mind these are business days, so weekends don't count). I figured Monday would start the 2-7 shipping timeline and would get some kind of notification that week that they were shipped out, but it did say 5-7 business days. I did not receive anything that week (first 5 business days), and on the following Monday the 6th business day, I called this place to see what's up. After giving her my order number, she had no answer and had to put me on hold to check. When she came back, she said they were being shipped that day. What a coincidence that they are being shipped after all this time but being shipped only after I called to get an update, and of course a BS excuse was given. I am confident that if I did not call, my order would have sat there and sat there. Up to you but be prepared!
SpyOptic 670939 Sunglasses
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WARNING: Reproductive Harm – https://www.p65warnings.ca.gov/Free Shipping within the contiguous US only (excluding Hawaii and Alaska) on all Orders over $100.
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1- Please fill out this form Return Authorization Form to get an RMA # you will receive a RMA # with instruction on how to return them within 48 to 72 Business hours from the time you submitted the form. Wait for our confirmation e-mail before shipping back the return
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Please allow us 3 to 5 business days from when items are received for us to process the refund. The amount to be refunded will not include shipping charges. if the order consists of 3 or more frames we will charge a 20% Restocking fee. otherwise only the shipping will be deducted.
Some exclusions may apply. Please note prescription lenses are final sale. We also do not accept returns on beauty products due to health and safety concerns. For more information please go to Returns
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.
Our state-of-the-art lab is equipped with the latest technology and equipment, including advanced edging and cutting technology, to produce lenses that are precise and accurate. Whether you need full frame or rimless lenses, our team is dedicated to providing the best possible results.
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 Spy Logan sunglasses prescription-ready?
Yes, the Spy Optic Logan 670939 can be fitted with prescription lenses through authorized optical retailers. Prescription versions can be made with Spy's Happy Lens technology, which combines vision correction with the mood-boosting and color-enhancing benefits of their proprietary lens formula. Both single-vision and progressive prescriptions are typically available.
What is Spy Happy Lens technology and how does it work?
Spy Happy Lens technology is designed to allow beneficial long-wave blue light to pass through while blocking harmful UV and short-wave blue light. This specific wavelength has been shown to stimulate serotonin production, which can boost mood and alertness. The lenses also enhance color and contrast by up to 30% (in Happy Boost variants) while maintaining accurate white balance, providing sharper, more vibrant vision.
Are Spy Logan sunglasses ANSI Z87.1 certified for safety use?
Select variants of the Spy Logan are ANSI Z87.1 certified for high-impact resistance, making them suitable for industrial work, shooting sports, and other safety applications. The ANSI-rated versions feature the same Grilamid frame construction and polycarbonate lenses as standard models but meet rigorous impact testing standards. Check the specific model variant to confirm ANSI certification.
What size are Spy Logan sunglasses and who do they fit best?
The Spy Logan measures 61mm lens width, 14mm bridge, and 127mm temple length, making them a small-to-medium fit. Customer reviews note they fit snugly and may feel tight on larger heads. The wrap-around design provides excellent coverage but can push against hats. If you have a larger face or prefer a roomier fit, consider trying them on first or exploring Spy's larger frame options.
Do Spy Logan sunglasses come with polarized lenses?
The Spy Logan 670939 is available with multiple lens options, including Trident polarized lenses that block over 99% of surface glare. Polarization is layered and sealed within the lens to prevent scratching, delaminating, or hazing. Both polarized and non-polarized versions feature Spy's Happy Lens technology for enhanced color, contrast, and mood benefits.
What is Grilamid and why is it used in Spy Logan frames?
Grilamid is a lightweight, high-performance thermoplastic known for exceptional strength, flexibility, and impact resistance. Spy uses Grilamid for the Logan frames because it's virtually indestructible under normal use, resists temperature extremes, and maintains its shape over time. This material is ideal for active lifestyles and demanding environments where durability matters most.
Compare With Similar Frames
How the SpyOptic Logan 670939 Sunglasses stacks up against the closest alternatives we carry.
- Larger fit for bigger heads and faces
- Same Grilamid durability and Happy Lens technology
- Similar wrap-around protection and style
- Similar wrap-around coverage and performance features
- Happy Lens technology available
- Comparable price range ($65-$123)
Read the full comparison
Spy Logan vs Spy Dirk: Which Wrap-Around Fits You?
Both the Spy Logan 670939 and Spy Dirk 672052 deliver the performance features Spy is known for—Grilamid frames, Happy Lens technology, and wrap-around protection. The key difference comes down to fit. The Logan measures 61-14-127 and runs small-to-medium, making it ideal for average to smaller faces. Customer reviews consistently note the snug, secure fit, though some with larger heads find it tight.
The Dirk offers a roomier fit, making it the go-to choice if you have a larger face or prefer more breathing room. One reviewer specifically noted the Dirk as "slightly larger than the Spy Logan frame." Both models feature the same virtually indestructible Grilamid construction, 8-base ARC polycarbonate lenses, and pin hinges. Happy Lens technology is available across both lines, providing the same mood-boosting, color-enhancing benefits.
Price-wise, the Logan offers more flexibility with a wider range ($59-$169) covering everything from basic tints to premium polarized and mirrored options, while the Dirk sits at $73-$101. If you need ANSI Z87.1 safety certification, the Logan has more certified variants available. For most buyers, the decision comes down to fit: try the Logan first if you have a small-to-medium face, and step up to the Dirk if you need more room.
Spy Logan vs Spy Cooper: Performance Wrap Showdown
The Spy Cooper 670195 shares the Logan's performance DNA but offers a different aesthetic. Both feature wrap-around designs, Grilamid construction, and Happy Lens options, but the Cooper has its own distinct shape and fit characteristics. Customers who own both models note differences in how they sit on the face and interact with hats or helmets.
The Logan's rectangular wrap design provides maximum peripheral coverage and a bold, athletic look. The Cooper offers similar protection but with styling that may appeal to different preferences. Both are available in comparable price ranges ($59-$169 for Logan, $65-$123 for Cooper), though the Logan typically offers more lens and frame variants, including more ANSI-certified safety options.
Choose the Logan if you want maximum lens variety, proven ANSI safety options, and a fit that works well for small-to-medium faces. The Cooper is worth considering if the Logan's fit doesn't work for your face shape or you prefer its specific styling. Either way, you're getting Spy's signature Happy Lens technology and bombproof Grilamid construction.
At a Glance
Spy Optic Dirk 672052 Sunglasses
Pros:
- Larger fit for bigger heads and faces
- Same Grilamid durability and Happy Lens technology
- Similar wrap-around protection and style
Cons:
- Higher price point ($73-$101 vs $59-$169)
- May be too large for smaller faces
- Less variety in lens options
Spy Optic Cooper 670195 Sunglasses
Pros:
- Similar wrap-around coverage and performance features
- Happy Lens technology available
- Comparable price range ($65-$123)
Cons:
- Different aesthetic—may not suit all face shapes
- Fit characteristics differ from Logan
- Fewer ANSI-certified safety variants