You save 0%
Color
Free Shipping
Price Match
Easy Returns
Licensed Opticians
The Smith 4D Mag Low Bridge Fit snow goggles deliver the brand's most expansive field of view in a frame engineered specifically for lower nose bridges and higher cheekbones. Built around Smith's revolutionary BirdsEye Vision lens design, these goggles curve beneath your eye line to expand downward and peripheral visibility by 25% compared to the I/O Mag—making it easier to check your gear, navigate technical terrain, and spot riders in your periphery without tilting your head.
BirdsEye Vision and ChromaPop Technology
The spherical lens wraps around your face in both the horizontal and vertical planes, creating a distortion-free optical experience that mimics the natural shape of your eyes. Smith's ChromaPop lens technology filters two specific wavelengths of light that cause color confusion, delivering enhanced contrast, natural color, and sharper definition in all conditions—from bluebird days to flat light and storm cycles. Each goggle includes two ChromaPop lenses: one optimized for bright light and a bonus lens for low-light conditions, so you're covered from dawn patrol to last chair.
The MAG interchangeable lens system uses magnets and dual locking levers at the frame outriggers for secure retention and tool-free swaps in seconds. Push the side levers, let the magnets release, align the new lens, and lock it down—fast enough to adapt mid-run when conditions change.
Low Bridge Fit: Extra Foam Where It Matters
The Low Bridge Fit design adds a thicker layer of foam padding around the nose bridge area, creating a complete seal for faces that typically experience gaps with standard goggles. This isn't just about comfort—proper sealing prevents cold air infiltration and moisture buildup that leads to fogging. The triple-layer DriWix face foam wicks moisture away from your skin, while the AirEvac ventilation system channels warm air up and out through integrated vents that align with Smith helmets for maximum fog-free performance.
"It fits my face soo much better than any other Smith Goggle I tried. It finally feels on par with Oakley's fit around the nose but with Smith's anti-fogging." — The Good Ride
The flexible frame conforms to different face shapes, and the QuickFit strap adjustment system with silicone backing keeps the goggles locked in place on your helmet. The 4D Mag Low Bridge Fit is compatible with Smith's prescription insert system for riders who need vision correction. All lenses provide 100% UV protection and feature 5X anti-fog inner lens treatment and carbonic-X outer lens material for scratch and impact resistance.
Product Details
Product DetailsModel
4D MAG Asia FitShape
Gender
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsFrame Color
BlackColor Code
11I99MPColor Description
Chromapop Everyday Red Mirror
Frame Color
BlackColor Code
1E7994YColor Description
Chromapop Sun Black
Frame Color
BlackColor Code
11J994YColor Description
Chromapop Sun Black
Frame Color
BlackColor Code
0NT99MPColor Description
Chromapop Everyday Red Mirror
Frame Color
BlackColor Code
12N994YColor Description
Alosa | Chromapop Sun Black
Frame Color
BlackColor Code
0JX99MPColor Description
Black - Chromapop Everyday Red Mirror
Frame Color
BlackColor Code
0ER995TColor Description
Chromapop Sun Platinum Mirror
Frame Color
BlackColor Code
11K99MPColor Description
Chromapop Everyday Red Mirror
Frame Color
BlackColor Code
0JX99OQColor Description
Chromapop Photochromic Red Mirror
Color Code
M007191KG99M5Color Description
Chromapop Everyday Rose Gold Mirror
Color Code
M007191GC99M5Color Description
Chromapop Everyday Rose Gold Mirror
Color Code
0OZ99M5Color Description
White Vapor - Chromapop Everyday Rose Gold Mirror
Frame Color
PinkColor Code
16Z99M5Color Description
Chromapop™ Everyday Rose Gold Mirror
Color Code
M007190JX994BColor Description
Chromapop Everyday Blue Mirror
Color Code
M007198EV994YColor Description
Markus Eder
Color Code
M007191KN99MNColor Description
Chromapop Sun Black Gold Mirror
Color Code
M007193PJ9941Color Description
Chromapop Everyday Violet Mirror
Color Code
M007193PH995TColor Description
Chromapop Sun Platinum Mirror
Color Code
M007193PI99MNColor Description
Chromapop Sun Black Gold Mirror
Color Code
M007193P2994BColor Description
Chromapop Everyday Blue Mirror
Color Code
M007193PP994YColor Description
Chromapop Sun Black
Color Code
M007193PK99MNColor Description
Chromapop Sun Black Gold Mirror
Color Code
M007193VC994BColor Description
MistLens Color
ChromaPop Everyday Blue Mirror
Color Code
M007190NT994YColor Description
SlateLens Color
ChromaPop Sun Black
Color Code
M007190JX99XPColor Description
BlackLens Color
ChromaPop Everyday Green Mirror
Color Code
M007193VL99XPColor Description
Emerald Renu Upcycled ScrapLens Color
ChromaPop Everyday Green Mirror
Color Code
M007190JX994VColor Description
BlackLens Color
ChromaPop Pro Photochromic Red Mirror
Color Code
M007193VI99M5Color Description
Olive Warm SteelLens Color
ChromaPop Everyday Rose Gold Mirror
Size Details
Size DetailsSize
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Size
00
Smith Optics Snow Goggles M00719 4D Mag Low Bridge Fit Goggles
Great
California Proposition 65 Proposition 65 is a California regulation that requires special warnings to be presented to customers if a product contains certain quantities of chemicals or toxicants known to the State of California to cause cancer, birth defects, or other reproductive harm. The following warning applies to the products linking to this page:
WARNING: Reproductive Harm – https://www.p65warnings.ca.gov/Free Shipping within the contiguous US only (excluding Hawaii and Alaska) on all Orders over $100.
At DesignerOptics.com we are committed to the highest quality of service.
We ship products to all 50 US states as well as to many other countries around the world. We take all the measures to ship our items in a timely manner, directly to your door, almost anywhere in the world.
In stock products usually ship within two business days, but may take up to five business days*. When an order ships you will receive a confirmation email with the tracking information. You can also track your order by logging into your account.
We provide FREE SHIPPING on all orders over $100 We also offer overnight and second day delivery shipping options. Please note that when using next day or second day delivery it still takes 48 to 72 Business hours for the order to be processed.
The Designer Optics Low Price Guarantee is simple:
Designeroptics.com matches the price of all retail competitors and major online retailers.
How it works:
Place the frames in your cart
Before placing your order in add the following the comments box, Add the URL (web address) of the page where you found the lower-priced item,
Your credit card will not be charged until we have confirmed with you by phone or by email that your item qualifies for our Price-Match Guarantee.
Please Follow those easy steps for returns
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
2- Send the product back to us following the instructions indicated in our e-mail and to the address we will provide you.
3- Make sure to confirm with us via e-mail the shipping date, the shipping service you used and the tracking number whenever you have
4- Include details of the return and how you would like for us to go about it (refund, store credit, exchange, etc). Designer Optics is not responsible for items damaged along the way.
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
What is the difference between the 4D Mag and 4D Mag Low Bridge Fit?
The Low Bridge Fit version features extra foam padding around the nose bridge area to create a better seal for faces with lower nose bridges and higher cheekbones. All other features remain identical, including the BirdsEye Vision lens design, MAG lens-change system, and ChromaPop technology. The Low Bridge Fit prevents gaps that can cause fogging and discomfort on certain face shapes.
How much larger is the field of view compared to the I/O Mag?
The 4D Mag offers a 25% increase in overall field of view compared to the I/O Mag, primarily by expanding downward and peripheral visibility. The BirdsEye Vision lens curves beneath the eye line, making it noticeably easier to see terrain directly below you, access jacket pockets, and spot obstacles in your peripheral vision without tilting your head.
How does the MAG lens-change system work?
The MAG system uses eight magnetic contact points and dual locking levers integrated into the frame outriggers. To swap lenses, push the levers on either side of the frame to release the locks, let the magnets disengage, align the new lens with the frame, and the magnets will guide it into position before you lock it down. The entire process takes seconds, even with gloves on.
Are the 4D Mag goggles compatible with prescription inserts?
Yes, the 4D Mag Low Bridge Fit is compatible with Smith's Optical Docking System (ODS) prescription insert, which snaps into place inside the goggle. The insert sits farther from your face than regular glasses, reducing fogging issues. This is a better solution than wearing glasses under the goggles for most prescription wearers.
What lens tints are included with the 4D Mag Low Bridge Fit?
Each goggle comes with two ChromaPop lenses: one for bright light conditions (typically with lower VLT percentage for sunny days) and one bonus lens for low-light conditions (higher VLT for overcast, stormy, or flat-light environments). The specific tints vary by colorway, but all use ChromaPop technology to enhance contrast and color definition.
Do these goggles integrate with Smith helmets?
Yes, the 4D Mag Low Bridge Fit is designed for ultimate integration with Smith helmets. The frame profile aligns with Smith helmet brims to eliminate gaps, and the AirEvac ventilation system channels warm, moist air from the goggles up through the helmet's ventilation channels for maximum fog-free performance and comfort.
Compare With Similar Frames
How the Smith Optics Snow Goggles M00719 4D Mag Low Bridge Fit Goggles stacks up against the closest alternatives we carry.
- Same BirdsEye Vision and 25% larger field of view
- Identical MAG lens-change system and ChromaPop lenses
- May fit better for faces with higher nose bridges
- $70-80 less expensive
- Same MAG lens-change system and ChromaPop technology
- Spherical lens with excellent optics
- Larger frame for bigger faces or more coverage
- Same Low Bridge Fit foam padding
- Identical BirdsEye Vision and ChromaPop technology
Read the full comparison
Smith 4D Mag Low Bridge Fit vs. Standard Fit vs. I/O Mag
Choosing between Smith's premium goggles comes down to fit and how much you value field of view. The 4D Mag Low Bridge Fit delivers Smith's most advanced optics in a frame engineered for lower nose bridges—but how does it stack up against the standard 4D Mag and the more affordable I/O Mag?
4D Mag Low Bridge Fit vs. Standard 4D Mag
The only difference is the foam. Both goggles share the same BirdsEye Vision lens that expands your field of view by 25% over the I/O Mag, the same MAG magnetic lens-change system, and the same ChromaPop lens options. The Low Bridge Fit adds extra foam padding around the nose bridge to create a complete seal on faces with lower nose bridges and higher cheekbones. If standard goggles leave a gap above your nose or create pressure on your cheeks, the Low Bridge Fit solves both problems. If you have a higher nose bridge, the standard fit will be more comfortable. Both are priced identically.
4D Mag Low Bridge Fit vs. I/O Mag
The I/O Mag costs $70-80 less and delivers excellent performance with the same MAG lens-change system and ChromaPop technology. The key difference is field of view: the 4D Mag's BirdsEye Vision lens curves beneath your eye line, expanding downward and peripheral visibility by 25%. In practice, this means you can see your boots, jacket pockets, and pack straps without tilting your head back—a noticeable advantage when you're stationary on the lift or adjusting gear mid-run. The I/O Mag offers a traditional spherical lens with great optics but less downward visibility. If you prioritize budget and proven performance, the I/O Mag is hard to beat. If you want the widest possible view and spend long days in the mountains, the 4D Mag justifies the premium.
4D Mag Low Bridge Fit vs. 4D Mag XL Low Bridge Fit
Both offer the same Low Bridge Fit foam and BirdsEye Vision technology—the XL simply has a larger frame. The standard 4D Mag Low Bridge Fit is a medium/large fit that works for most face sizes. The XL is designed for larger faces or riders who want maximum coverage. If you've found that most goggles feel too small or you prefer an oversized look, the XL is the better choice. If you have a medium-sized face, the standard fit will be lighter and less bulky while still delivering the same optical performance.
All three models integrate seamlessly with Smith helmets and include two ChromaPop lenses. The 4D Mag Low Bridge Fit hits the sweet spot: the most advanced field of view in a fit that works for lower nose bridges, at a size that suits most riders.
At a Glance
Smith 4D Mag Goggles (Standard Fit)
Pros:
- Same BirdsEye Vision and 25% larger field of view
- Identical MAG lens-change system and ChromaPop lenses
- May fit better for faces with higher nose bridges
- Same price point and lens options
Cons:
- Standard foam may leave gaps on lower nose bridges
- Less secure seal for certain face shapes
- Can cause pressure points on higher cheekbones
Smith I/O Mag Goggles
Pros:
- $70-80 less expensive
- Same MAG lens-change system and ChromaPop technology
- Spherical lens with excellent optics
- OTG compatible and works with prescription inserts
- Proven anti-fog performance
Cons:
- 25% smaller field of view than 4D Mag
- Less downward visibility—no BirdsEye Vision
- Standard fit only (no Low Bridge Fit option in our catalog)
Smith 4D Mag XL Low Bridge Fit Goggles
Pros:
- Larger frame for bigger faces or more coverage
- Same Low Bridge Fit foam padding
- Identical BirdsEye Vision and ChromaPop technology
- Same MAG lens-change system
Cons:
- May be too large for medium-sized faces
- Slightly heavier due to larger lens
- Can overwhelm smaller face shapes