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Combining a bold front with sleek temples in a mid-sized frame, the Montana brings big performance to the biggest skies. Features include the detail- and mood-boosting Happy Lens, a virtually indestructible Grilamid construction, high-quality pin hinges, and 6-base polycarbonate ARC lenses providing 100% UV protection.
- Happy Lens enhances color and contrast, increases clarity, and improves mood and alertness
- Available with Trident polarization that eliminates reflective light
- Constructed from virtually indestructible Grilamid
- 6-base polycarbonate ARC lenses
- High-quality pin hinges
- 100% UV protection reduces eye fatigue and long-term sun damage
- Frames measures a medium 54-16-140
Product Details
Product DetailsModel
MontanaShape
Gender
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsFrame Color
BlackColor Code
973863Color Description
Soft Matte BlackLens Color
Happy Gray Green
Frame Color
BlackColor Code
038486Color Description
BlackLens Color
Happy Gray Green Polar with Dark Blue Spectra
Frame Color
BlackColor Code
973864Color Description
Soft Matte BlackLens Color
Happy Gray Green Polar
Frame Color
BlackColor Code
973417Color Description
Soft Matte BlackLens Color
Happy Bronze with Gold Mirror
Color Code
438863Color Description
Soft Matte Camo TortLens Color
Happy Gray Green
Frame Color
BlackColor Code
0000206Color Description
Soft Matte BlackLens Color
Happy Boost Polar with Ice Blue Mirror
Color Code
0000265Color Description
Matte Gray/translucent BlackLens Color
Happy Bronze with Light Green Mirror
Color Code
0000263Color Description
Matte Translucent BlackLens Color
Happy Bronze with Platinum Mirror
Color Code
0000264Color Description
Black/honey TortLens Color
Happy Dark Brown Fade
Size Details
Size DetailsLens Width
63mmBridge Width
17mmTemple Length
120mmSize
6317-120
Lens Width
54mmBridge Width
16mmTemple Length
140mmSize
5416-140
Lens Width
54mmBridge Width
16mmTemple Length
140mmSize
5416-140
Lens Width
54mmBridge Width
16mmTemple Length
140mmSize
5416-140
Lens Width
54mmBridge Width
16mmTemple Length
140mmSize
5416-140
Lens Width
54mmBridge Width
16mmTemple Length
149mmSize
5416-140
Bridge Width
16.00Temple Length
140.00Size
5416-140
Bridge Width
16.00Temple Length
140.00Size
5416-140
Bridge Width
16.00Temple Length
140.00Size
5416-140
SpyOptic 673407 Sunglasses
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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.
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
Can I add prescription lenses to the SpyOptic Montana sunglasses?
Yes, the Montana is prescription-ready and highly compatible with Rx lenses. The 6-base lens curve (flatter than many sport sunglasses) makes it easier to fit prescription lenses without optical distortion. You can order the Montana with custom prescription lenses including Spy's Happy Lens technology in your prescription, combining vision correction with the mood-boosting benefits of their proprietary lens formulation.
What is Spy Happy Lens technology and does it really work?
Happy Lens is Spy's patented lens technology that selectively filters light wavelengths—it allows beneficial long-wave blue light to pass through while blocking harmful UV and short-wave blue light. This enhances color and contrast, reduces eye strain, and may improve mood and alertness by supporting natural circadian rhythms. Independent reviews confirm the lenses deliver noticeably enhanced clarity and vivid colors compared to standard tinted lenses.
How durable is the Grilamid frame material?
Grilamid is a high-performance thermoplastic known for exceptional durability and flexibility. It's virtually indestructible under normal use—it can withstand high impact without snapping, maintains its shape in hot conditions, and resists damage from sweat, sunscreen, and oils. Grilamid is also about half the weight of traditional plastic frames, making the Montana comfortable for all-day wear while being far more flexible and break-resistant than standard acetate or polycarbonate.
What's the difference between the 54mm and 63mm sizes?
The 54mm is the standard mid-sized fit suitable for most face widths, while the 63mm is a larger size for people with wider faces or those who prefer more coverage. Both share the same 16mm bridge width and 140mm temple length. The frame measurements are 54-16-140mm and 63-16-140mm respectively, with the first number indicating the lens width (eye size).
Are the Montana sunglasses polarized?
Polarization depends on the lens variant you choose. Several Montana options feature Spy's Trident polarization technology, which eliminates reflective glare from water, snow, and pavement—ideal for driving, fishing, or water sports. Non-polarized Happy Lens variants are also available. Check the specific lens description (e.g., "Happy Gray Green Polar") to confirm whether your chosen variant includes polarization.
How do the Montana sunglasses fit compared to other Spy models?
The Montana offers a mid-sized square fit with medium coverage. It's slightly smaller and more compact than the Spy Logan (which has a larger 61mm lens width and wraparound style), making the Montana better for everyday casual wear. Compared to the Spy Discord, the Montana has a bolder, more squared-off front. The 6-base lens curve is flatter than Spy's sport-specific models, providing a more traditional sunglass look and better prescription compatibility.
Compare With Similar Frames
How the SpyOptic Montana 673407 Sunglasses stacks up against the closest alternatives we carry.
- Larger 61mm lens width for bigger faces or more coverage
- More wraparound style for enhanced peripheral protection
- Same Happy Lens and Grilamid benefits
- Similar mid-sized fit and price point
- Different frame shape for varied style preferences
- Same Happy Lens technology and UV protection
- Similar price range and feature set
- Grilamid frame with same durability benefits
- Happy Lens technology with multiple lens options
Read the full comparison
SpyOptic Montana vs. Logan vs. Discord: Which Spy Frame Is Right for You?
All three models share Spy's core DNA—Grilamid construction, Happy Lens technology, and prescription compatibility—but they serve different needs. The Montana is the Goldilocks option: a mid-sized 54mm square frame with a bold front and sleek temples that works equally well for daily errands, driving, or weekend adventures. Its 6-base lens curve keeps the look traditional while remaining highly Rx-friendly, and the price ($61.69–$112.31) makes it one of Spy's most accessible performance frames.
The Logan steps up in size and coverage with a 61mm lens width and more wraparound design. If you have a larger face, need maximum peripheral protection, or spend serious time on the water or in high-glare environments, the Logan's extra coverage and sporty aesthetic make sense. However, it's noticeably larger and can overwhelm smaller faces—and the price range ($59.67–$169.00) skews higher for polarized variants. The Montana offers better versatility for casual wear.
The Discord sits in similar mid-sized territory as the Montana ($67.38–$123.54) but with a different frame shape. If the Montana's bold square front feels too aggressive, the Discord may offer a softer alternative while keeping the same Happy Lens benefits and prescription readiness. The choice here comes down to style preference and how the frame contours match your face shape.
Our take: The Montana hits the sweet spot for most buyers—it's affordable, versatile, and delivers Spy's best lens and frame technology in a size that works across a wide range of faces. Choose the Logan if you need more coverage or have a larger face, or the Discord if you prefer a less angular look. All three are excellent; the Montana just does more for more people.
At a Glance
SpyOptic Logan 670939 Sunglasses
Pros:
- Larger 61mm lens width for bigger faces or more coverage
- More wraparound style for enhanced peripheral protection
- Same Happy Lens and Grilamid benefits
- Better for high-glare activities like water sports
Cons:
- Larger size may overwhelm smaller faces
- More sporty aesthetic, less versatile for casual wear
- Higher price range ($59.67–$169.00 vs Montana's $61.69–$112.31)
SpyOptic Discord 673119 Sunglasses
Pros:
- Similar mid-sized fit and price point
- Different frame shape for varied style preferences
- Same Happy Lens technology and UV protection
- Prescription-ready with comparable lens compatibility
Cons:
- Less bold, squared-off look compared to Montana's distinctive front
- May offer less coverage depending on face shape
- Fewer customer reviews available for comparison
SpyOptic Cyrus 673180 Sunglasses
Pros:
- Similar price range and feature set
- Grilamid frame with same durability benefits
- Happy Lens technology with multiple lens options
- Prescription-ready construction
Cons:
- Different frame shape may not suit all face types
- Less established customer review base than Montana
- Style differences may be more sporty or casual depending on preference