This Mountain Fly has been specifically designed to protect your feet from virtually all rough terrain. A GORE-TEX membrane in the upper provides breathability and offers the industry's greatest waterproofing. All other areas have been outfitted with durable hard rubber that provides unlimited protection. The same rubber surrounds the big toe for optimal all-around protection. Thick chevron lugs on the grippy outsole maximize grip and provide optimal strike. Flexible cuffs at the ankle prevent debris from entering, while reflective elements on the heel and laces ensure good visibility in the dark. The secret lies in the comfortable React midsole, where a carbon fiber plate, adopted from the advanced Vaporfly 4%, extends the entire length of the shoe. Its stiffness improves endurance and protects against hard, uneven surfaces.
This Mountain Fly has been specifically designed to protect your feet from virtually all rough terrain. A GORE-TEX membrane in the upper provides breathability and offers the industry's greatest waterproofing. All other areas have been outfitted with durable hard rubber that provides unlimited protection. The same rubber surrounds the big toe for optimal all-around protection. Thick chevron lugs on the grippy outsole maximize grip and provide optimal strike. Flexible cuffs at the ankle prevent debris from entering, while reflective elements on the heel and laces ensure good visibility in the dark. The secret lies in the comfortable React midsole, where a carbon fiber plate, adopted from the advanced Vaporfly 4%, extends the entire length of the shoe. Its stiffness improves endurance and protects against hard, uneven surfaces.
This Mountain Fly has been specifically designed to protect your feet from virtually all rough terrain. A GORE-TEX membrane in the upper provides breathability and offers the industry's greatest waterproofing. All other areas have been outfitted with durable hard rubber that provides unlimited protection. The same rubber surrounds the big toe for optimal all-around protection. Thick chevron lugs on the grippy outsole maximize grip and provide optimal strike. Flexible cuffs at the ankle prevent debris from entering, while reflective elements on the heel and laces ensure good visibility in the dark. The secret lies in the comfortable React midsole, where a carbon fiber plate, adopted from the advanced Vaporfly 4%, extends the entire length of the shoe. Its stiffness improves endurance and protects against hard, uneven surfaces.
This Mountain Fly has been specifically designed to protect your feet from virtually all rough terrain. A GORE-TEX membrane in the upper provides breathability and offers the industry's greatest waterproofing. All other areas have been outfitted with durable hard rubber that provides unlimited protection. The same rubber surrounds the big toe for optimal all-around protection. Thick chevron lugs on the grippy outsole maximize grip and provide optimal strike. Flexible cuffs at the ankle prevent debris from entering, while reflective elements on the heel and laces ensure good visibility in the dark. The secret lies in the comfortable React midsole, where a carbon fiber plate, adopted from the advanced Vaporfly 4%, extends the entire length of the shoe. Its stiffness improves endurance and protects against hard, uneven surfaces.
Last updated at 03/24/2026 12:49:43
Nike ACG Mountain Fly Gore-Tex 'Dark Grey' | Black | Men's Size 6
Delivery between 26 Mar – 2 Apr $25
Nike Acg Mountain Fly Gore Tex 'Dark Grey' Sneakers Casual Shoes CT2904-002 38.5
Delivery between 25 Mar – 6 Apr $6
Nike ACG Mountain Fly Gore-tex Dark Grey, UK 5.5
Delivery between 29 Mar – 2 Apr $14.99
originally posted on stockx.com
Everything OK except that some transactions are two long of a wait mainly coz the shoes are coming from outside the USA..it would have been great to know where the shoe is coming from prior to buying/bidding on the shoes. Coz both my shoes came outside the USA (not knowingly) & if I've known that from the get go I would not bought it nor bid on it coz that's process is going to take longer compared to the shoes that's coming from within the USA.As a company StockX is OK like the other place/companies.
originally posted on store.nike.com
LOOOOOVE these shoes! Super comfortable when walking/stepping. The look of them are right up my alley & even got compliments from random people. Even the reflectiveness in the dark...is an added feature/reason why I purchased. I had my eye on them for some time, so I knew I wanted them was going to get them!
originally posted on store.nike.com
First pair almost 2 years old!!They really are ACG they’ve been put through everything and have become my all time favorite shoe.Break in period is tight on the foot but the more I’ve used the shoes the better they got.Break them in and they will last forever! Best bang for your money shoe.Oh and get a half size bigger. They run tight and smaller then other shoes. I am flat foot and a bit wider so break in was rough/tight for you fellow wide flat feet people. Don’t be scared they get really comfortable after a few uses.
| Fit | Normal |
| Cut | Low Cut |
| Midsole | Rubber |
| Outsole | Rubber |
Nike ACG Mountain Fly Gore-Tex 'Dark Grey' | Black | Men's Size 6
Delivery between 26 Mar – 2 Apr $25
Nike Acg Mountain Fly Gore Tex 'Dark Grey' Sneakers Casual Shoes CT2904-002 38.5
Delivery between 25 Mar – 6 Apr $6
Nike ACG Mountain Fly Gore-tex Dark Grey, UK 5.5
Delivery between 29 Mar – 2 Apr $14.99
Everything OK except that some transactions are two long of a wait mainly coz the shoes are coming from outside the USA..it would have been great to know where the shoe is coming from prior to buying/bidding on the shoes. Coz both my shoes came outside the USA (not knowingly) & if I've known that from the get go I would not bought it nor bid on it coz that's process is going to take longer compared to the shoes that's coming from within the USA.As a company StockX is OK like the other place/companies.
LOOOOOVE these shoes! Super comfortable when walking/stepping. The look of them are right up my alley & even got compliments from random people. Even the reflectiveness in the dark...is an added feature/reason why I purchased. I had my eye on them for some time, so I knew I wanted them was going to get them!
First pair almost 2 years old!!They really are ACG they’ve been put through everything and have become my all time favorite shoe.Break in period is tight on the foot but the more I’ve used the shoes the better they got.Break them in and they will last forever! Best bang for your money shoe.Oh and get a half size bigger. They run tight and smaller then other shoes. I am flat foot and a bit wider so break in was rough/tight for you fellow wide flat feet people. Don’t be scared they get really comfortable after a few uses.
Oh man, I wanted these so bad. I’m a fan of ACG. When they popped up here at Nordstrom I decided to jump for them. The reviews have been pretty accurate. The slip in the heel is awful, tho. I can’t see running in these. Some reviewers mentioned they run small so to size up. I went half size up and I would say they probably fit more true to size. You want this sneaker to be very snug. I tried adding an extra insole but the slip is still there. They look great, but sad to say I’ll be returning.
I’m super stoked to be able to get a pair of the newly released clay green colorway! Last year, I wasn’t very lucky to get the khaki and black ones. I had to resort to other retailers for them. They were sold out immediately on Nike’s website. I’ve read other reviews saying these run snug and should go up half a size, but unless you have very wide feet, I’d suggest staying true to size. I now have the mid and low top version of mountainfly in my collection for both summer and winter period.
I’ve been wearing these for about a week now and have tested them in various conditions (snow, ice, mud, wet).The shoe has proved to be waterproof below the upper seam and also quite warm. Traction is nice, however the outsole is better suited for trails, not the pavement.Cushioning is fine, you definitely feel that there’s a carbon fiber plate inside, so it can be unusual at first, but is comfortable though and protects your feet from rocks and roots.Don’t be confused by other reviews, the shoe is true to size, but the fit is quite snug, especially in the toe box area. Heel slip is somewhat an issue, though it’s okay, if you tighten up the lacing loops.Overall the shoe is great for cold season trekking and does well in a city landscape too. Highly recommend ... MoreI’ve been wearing these for about a week now and have tested them in various conditions (snow, ice, mud, wet).The shoe has proved to be waterproof below the upper seam and also quite warm. Traction is nice, however the outsole is better suited for trails, not the pavement.Cushioning is fine, you definitely feel that there’s a carbon fiber plate inside, so it can be unusual at first, but is comfortable though and protects your feet from rocks and roots.Don’t be confused by other reviews, the shoe is true to size, but the fit is quite snug, especially in the toe box area. Heel slip is somewhat an issue, though it’s okay, if you tighten up the lacing loops.Overall the shoe is great for cold season trekking and does well in a city landscape too. Highly recommend these, one of the best ACG styles yet.
These are amazing shoes, for both city and hiking. They look great and offer huge rain protection. Received my 2 pairs in clay green, but both have defects near the toe. Looks like the fabric bonding had issues.Aside from that, my only other complaint is heel is not nearly as secure as the Mountain Fly Low. My heel slips more easily, seems as though the heel cushion lock is placed way to far down.
Excellent all around waterproof/trail/all weather shoes. I have 3 pairs of these and 2 of them are the low top cuts. I like this high tip the best because of the ankle bootie and toggle lace system. What separates these from the competition is the amazing traction and the carbon fiber plate sandwiched in between the React. It makes for a super stable and springy ride. I had an excellent time climbing a rock and dirt trail in Arkansas, and the Mountain Fly gave me insane amounts of confidence traversing the 5 mile trail. These command a premium price but I don't mind spending it on quality materials and technology from the other high performance shoes. I size up for a roomier toe box.
Shoe seems durable but isn't comfortable. I usually wear a size 10, and I size up a half to 10.5 with all ACG shoes, but this still felt too tight, especially when it compresses down on my toenails. I would have liked to size up to 11 to try and see if that would have solved the toe area, but it was already sold out. Also, when you walk, your heel will slip slightly. This isn't the worst problem if you are using this shoe as a weather-beating everyday shoe, but on hikes, it would make uphill trekking very difficult. Overall, seems like an attractive shoe designed for a nice techwear look, but in reality, doesn't really live up to the needs it's advertised for. I would have definitely used this for heavy rain walking if the size 11 worked well.
Awesome Hiking ShoeI went with my normal size fit and they are a bit snug but I truly believe they’re supposed to fit that way since I did not experience heel slip like other reviewers. For those with wide feet like myself I think you will be fine with your regular size.Walking dirt trails with a few creek crossings these shoes performed amazingly. Outer sole provides the traction needed on steep dirt hills, and clear pebble full creeks. The gore-tex upper was waterproof as described. The overall comfort of the shoe was great given it’s purpose and intended environmentsIf you’re on the fence about these, don’t be. Buy em and hiking will be all you look forward to
| Fit | Normal |
| Cut | Low Cut |
| Midsole | Rubber |
| Outsole | Rubber |