MEMBER REVIEW
GIRO DROPLINE MTB GOGGLE REVIEW
OPTOMETRIST APPROVED
Review & Photos by Jeff Jackson
September 11, 2025
As an avid mountain biker and practicing optometrist, I was excited to get my eyes behind the all new Giro Dropline MTB Goggle. This new goggle features quick change lenses designed in partnership with ZEISS, a leader in the development of high-quality optics. In diagnosing and treating eye disease, I put my trust in instruments that use ZEISS optics every day. In this review, I will share my experience testing the new Dropline MTB Goggle and explain why frame design, lens optics, and color spectrum are important factors to consider when it comes to enhancing your ride.
Jeff won the opportunity to receive the new Giro Dropline MTB Goggle to test for this Member Review, thanks to his support on The Loam Wolf Member Platform. We thank Giro for providing us with the goggles to give to our awesome member community to test and keep. If you’d like the chance to get early access to products, test and review gear and get exclusive discounts to industry brands, check out our member’s platform here.
ABOUT THE GIRO DROPLINE MTB GOGGLE
The Dropline is a new MTB Goggle offering from Giro, and is one of the first products to feature their newly designed logo. It is EN1938 certified which meets the MX standard for eye protection. So if you happen to mix MTB with moto, this goggle has you covered, and it should offer stellar protection for mountain bike duties.
The Giro Dropline frame is intentionally tall and wide compared to most MTB goggles, but not in an obnoxious way. This allows plenty of space for those who need to wear prescription glasses under the goggles – Over The Glass approved. The design promotes airflow to combine with Anti Fog lens treatment to keep your vision clear. The strap is easy to adjust, with one adjustment point on each side to get them dialled in. This keeps the strap even on both sides for aesthetics. The foam surrounding the face is comfortable, and features a DryCore silicone channel on the upper brow that directs sweat away from the eyes.
The Giro Dropline Goggles come with two lenses for your $139.95 investment, and are available in a choice of four colorways. In partnership with ZEISS, Giro designed the Vivid Trail lens to employ an optimized light spectrum for daytime riding. The light tuning is achieved by blocking specific wavelengths of light, while allowing other wavelengths to pass through. The resulting color spectrum reduces flat light and improves vision and contrast on the trail. The clear lens is included for cloudy, shady, or nighttime riding.
Both lenses are injection molded impact resistant polycarbonate, as opposed to lenses that are stamp cut from a thin sheet of lens material. This is a big deal! Injection molding allows the lens to be optimally thicker or thinner in strategic areas, resulting in a wider field of view with minimal distortion. With the cylindrical design, distortion is kept to an absolute minimum.
THE DIRT
I’m going to start with the best feature. The quick change lens system is amazing! Not only is it a snap (pun intended) to change the lenses, but the ability to easily remove a lens for cleaning when necessary is awesome. The lens can be removed and installed in a matter of seconds, with a satisfying and reassuring snap sound when it locks into place. Kudos to Giro for the execution of this Quick Change system.
The light transmission on the Vivid Trail lens is not too bright on trails fully exposed to the sun, yet not too muted when riding tree-lined trails that run in and out of shadows. I never experienced disabling glare, even when riding in the bright Arizona sun at a low angle on the horizon. The color spectrum felt natural, letting me focus on the trail ahead without distraction. The clear lens was perfect for low light and night riding, and it was great to see it included in the box.
I tested the Dropline in 80 to 105 degree temperatures in Arizona, with humidity levels ranging from 10 to 50 percent. Certainly not the ultimate test in anti-fog capabilities, but there was plenty of moisture coming off my brow. The DryCore silicone sweat channel embedded in the foam above the brow worked perfectly. I never had sweat dripping into my eyes or splashing onto the lenses. It was a little different to feel sweat trickling down the sides of my face, but much better than the alternative and having it run into my eyes or pool against the inside of the lens. The ventilation was excellent and the field of view was nice and wide. I haven’t had trouble with the goggles feeling too hot or fogging up.
I typically ride with the less expensive 100% Strata 2 goggle, and these are a noticeable step up in quality and performance. I would consider them well worth the extra money if you’re a serious mountain biker looking to obtain the best vision on the trail.
The Wolf’s Last Word
I was extremely impressed with the quality and functionality of the Dropline goggles. As a mountain biker, I would definitely recommend them to my riding peers. As an optometrist, the ZEISS collaboration and the attention to detail makes my recommendation even more likely! 
Price: $139.95
Weight: 173 grams
Website: Giro.com
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ABOUT THE WOLF
I raced BMX and rode mountain bikes as a kid, played baseball in college, and got back into mountain biking in 2020. My favorite type of riding is tech enduro. I love riding in Sedona. I ride 2-3 times a week and do a few MTB trips each year.
Rank: Wolfpack Member
Size: 5’9” | 225 lbs
Social: @jeffjacksonMTB
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