Properly selected footwear is the absolute foundation of any outdoor activity. Blisters and pressure sores can ruin any adventure. This is particularly true of tactical footwear due to the greater demands placed on it. It must provide not only wearing comfort and a secure hold on the foot during dynamic movement over uneven terrain and at different angles, but also resistance to harsh environmental conditions: fallen branches and limbs, rocks, rubble, broken glass, reinforcing bars and all the other junk found in ruined buildings. The boots must also provide a good grip on most slippery surfaces.
It is worth emphasizing that there is no single universal boot that will work in every condition and on every foot. We all have differently shaped arches, different midfoot widths, different instep heights, different gait patterns and different body weights to support and cushion. The type of activity for which we choose our footwear can also vary. We will look for a different model for the shooting range, another for buildings, forests or mountains — especially for long-distance hiking with a heavy load. When we have a choice, we will reach for one boot for a fast-paced operation and another when we have to spend many days wearing it.
Over the years, I have gone through many pairs of boots from various manufacturers, mostly from the premium tactical footwear segment. Some were softer or stiffer, provided better or worse cushioning over uneven ground, and offered varying degrees of ankle support. I wore virtually all of them under the blazing sun, in rain, in ruins and mud, on sharp volcanic rocks and wet rocks, as well as in snow in the mountains. I have therefore tested them in most conditions tactical footwear may encounter, with the exception of exposure to oils and other chemicals. I prefer stiffer boots, but models that are too stiff are not suitable for longer hikes with a backpack. Soft “slippers” usually last only one season and, paradoxically, are not comfortable in the long run, especially with a heavy backpack. I would generally move on to another model after wearing one pair out — until I came across the 5.11® A/T Boot series.
5.11 Tactical also makes boots!
5.11 is not a company commonly associated with footwear, even though it has been offering boots for a very long time. As a fan of the brand, I have worn various models over the years and, to be honest, they were not always entirely “my kind of boots.” The latest footwear family featuring A.T.L.A.S. (All Terrain Load Assistance) technology, however, marks a completely new chapter.
The A.T.L.A.S. footwear series debuted at SHOT Show 2020 in Las Vegas. It includes training models, low-cut trail shoes and fairly versatile tactical footwear. I was wearing them myself later that same year, specifically the A/T 8’’ Waterproof Non-Zip Boot, which lasted several years of fairly regular, intensive outdoor use. When it finally came time to replace them, I was happy to buy another identical pair. In the meantime, I was also offered the opportunity to review the 6-inch non-waterproof model — the 5.11 A/T 6’’ Non-Zip Boot (model 12440).
Welcome to my review of the 5.11 A/T 6’’ Non-Zip Boot, based on years of experience. You will find out why I already own my third pair of boots from this series and why I see no need to look for anything else — other than perhaps satisfying my curiosity.
Boot construction
As the name suggests, the upper of this model is 6 inches high, or approximately 15 cm, which is enough to provide secure ankle support on uneven ground. It is made primarily from water-resistant suede leather, as well as nylon and abrasion-resistant nylon mesh. These materials improve breathability and probably also help reduce the weight of the boot — a single boot weighs 590 g in size 43.
The rear section of the upper is cut lower to increase freedom of movement outdoors. The heel is additionally stiffened and reinforced with a layer of perforated, hardened suede leather. Above the ankle, the upper is made of breathable nylon, with its edge protected by nylon webbing. A nylon webbing pull loop is positioned above the heel to make the boots easier to put on. Unlike the taller 8-inch version of these boots, this model has a shorter loop for some reason. This negatively affects the functionality of the feature, although it does not mean that it does not work — it is simply harder to grab, especially while wearing gloves.
The tongue is made of nylon mesh and is stitched to the height of the ankle. This reduces the risk of small debris from the ground and water entering the boot during brief contact with water. A convenient nylon webbing pull tab is also provided at the top to make the boot easier to put on.
The 5.11 A/T 6″ Non-Zip Boot uses a two-zone lacing system thanks to a locking eyelet at ankle height (locking ankle eyelet). This allows the tension of the laces to be adjusted separately in the lower and upper sections of the boot. It also means that even if a shoelace comes undone during activity, you will not immediately lose the boot — the eyelet holds the lacing firmly in place.
The model is not waterproof because it does not have a membrane, but it does retain a certain degree of water resistance, especially after waterproofing treatment. According to the manufacturer, the leather used has enhanced water resistance, although there is no information on exactly what this means. What is certain is that water beads on the surface of the boot straight out of the box. The drainage opening around the instep, however, suggests that this model is intended primarily for dry conditions. I discuss below how the boots performed during a hike in torrential rain.
The A.T.L.A.S. sole can handle a lot
All Terrain Load Assistance System (A.T.L.A.S.)is a patented platform used in 5.11 footwear that is responsible for load distribution and cushioning. Its purpose is to improve stability and absorb shock during each step, particularly when hiking under a heavy load.
The system consists of cooperating cushioning, stabilizing and load-distributing layers. The first component to come into contact with the foot is the OrthoLite® Comfort Foam insole, a conventional foam footbed — there is no “rocket science” here. Underneath it, however, is the A.T.L.A.S. Technology Plate, which forms the heart of the entire system.
The plate is made of polypropylene, which the manufacturer emphasizes is recycled. It performs several functions simultaneously. First and foremost, it stiffens the boot and provides proper support on uneven ground. According to the manufacturer, it also limits twisting of the boot around the longitudinal axis of the foot, which is important when carrying a heavy load over difficult terrain. In addition, its spring-like flex can be felt and helps propel each step like a spring. The A.T.L.A.S. plate also distributes pressure evenly across the entire surface of the foot. It can be removed or replaced if necessary. This distinguishes the 5.11 system from designs used by other manufacturers, where an analogous “plate” is sometimes permanently embedded in the sole.
The midsole is also divided into two zones. Force Foam™ in the heel is responsible for cushioning heavier impacts, while the material used in the forefoot returns some of the stored energy to the stride as the toes push off the ground. Taken together, all of the above means that the 5.11 A/T 6’’ Non-Zip Boot is quite comfortable even for running.
The relatively low weight of the 5.11 A/T 6’’ Non-Zip Boot, combined with the springiness of the sole, also makes it well suited to running
The outsole is made of medium-hard rubber. It meets American ASTM standards for slip resistance and resistance to oils. The tread is aggressive, multi-directional and features a “caltrop” pattern.
An interesting detail, mentioned during the SHOT Show 2020 presentation, is that the company designed this boot to be somewhat wider than the generally accepted standard. Research conducted among law enforcement officers showed that after an hour of duty in full gear, the foot increases in volume. This is therefore a boot designed from the outset for long hours of work under a heavier load.
In practice
The boots reviewed here are ready to use straight out of the box, as confirmed by other opinions I found online. Having already had very good experiences with the taller eight-inch waterproof model from this series, when I received the 5.11 A/T 6″ Non-Zip Boot — just before my vacation — I took a chance and wore the brand-new boots on a trip to Mount Teide in Tenerife: a 22 km hike over volcanic rock to a summit at 3,718 m above sea level. Without breaking them in beforehand, the boots provided complete comfort throughout the entire route during the nine-hour hike.
5.11 A/T 6’’ Non-Zip Boot at the summit of Pico del Teide
The second major test of the boots was the Delta Recon Squad 2026 competition, during which I covered 52 km in 17 hours carrying a 30 kg load. They had already performed equally well during preparations for the competition, on mountain hikes under similar conditions. On top of that, after covering approximately one-third of the distance during Delta Recon Squad 2026, a torrential downpour hit, meaning that I walked the rest of the route in completely soaked boots. I deliberately chose a non-waterproof model for this occasion, following the principle that boots without a membrane have a better chance of drying faster while still on your feet.
The author with his partner shortly before a task-based medical checkpoint during Delta Recon Squad (the boots were already soaked)
Despite being soaked, the water was quickly drained from the boots, and the soaked upper did not prevent me from comfortably completing the route. My feet were given a rest only once — between the daytime and nighttime sections. This competition was also the best test of the A.T.L.A.S. system. The acronym’s reference to the mythical Atlas, carrying the world on his shoulders, is not without reason. The level of cushioning and even distribution of a heavy load meant that I did not feel the distance in my legs to the same extent as many of the other participants, who were clearly feeling the strain. The next day, during the shooting stages, I simply walked around normally — without pressure sores or blisters. With these boots, you simply keep moving forward.
5.11 A/T 6’’ Non-Zip Boot during shooting stages at the Light Infantry competition
The outsole tread grips the ground very well in almost any conditions — regardless of whether we are walking over smooth, wet rocks or mud. What is more, these are the only boots in this category I have owned so far that barely slip at all on wet, polished stone, or even on light ice. This is somewhat surprising because most tactical footwear manufacturers emphasize that their products feature slip-resistant and oil-resistant outsoles. It was only the boots reviewed here, however, that provided me with the level of traction I expected in these conditions.
I believe this is due not only to the tread pattern, but also to the slightly softer rubber compound used. Although it should theoretically be less resistant to wear, my previous pair lasted approximately four years of hiking and everyday urban wear during colder weather, without significant tread wear. In fact, what finally forced me to replace the first pair was an undetected microcrack in the sole that resulted in slight water ingress. The rest of the boot, apart from developing a certain “patina,” remained technically faultless.
A farewell photo of the first well-worn pair in South Korea after returning from Hallasan (1,950 m above sea level)
The 5.11 A/T 6″ Non-Zip Boot is essentially a complete, versatile boot for demanding terrain and heavy loads. Whether the version with or without a membrane is better is a matter I leave to individual preference. I previously wore the membrane version in all weather conditions, including hot weather. Contrary to the common perception of membrane footwear, there was no problem with “breathability” — my feet did not get sweaty and I did not develop hot spots. Nevertheless, if I had to choose today, I would opt for the non-membrane version on warmer days because it “breathes” exceptionally well.
There is no such thing as a universal boot, however. The 5.11 A/T 6″ Non-Zip Boot is not suitable for longer mountain hikes in snow. A boot that performs very well in almost every other condition feels too flexible in the mountains during winter. When hiking with a backpack through sinking snow while wearing traction cleats, it lacks some stiffness. The flexible sole is another issue, as it does not help when climbing and the only point of support is on the toes. The toe box could also have a rubberized protective layer, which would improve resistance to water absorption when walking through wet grass.
Summary
The tactical footwear market is so extensive that it is difficult to imagine anyone not finding something that suits them. After years of using footwear from most of the popular premium tactical brands, I personally chose the 5.11 A/T 6″/8″ Boot series as my go-to footwear for outdoor use. In my opinion, it offers the ideal balance between stiffness and cushioning while hiking.
5.11 A/T 6’’ Non-Zip Boot in the Tatra Mountains
This review is obviously not the final word. We all have different foot shapes and different gait patterns. I know myself how much footwear I went through before finding the model described in this article. I therefore recommend trying different options available on the market, but I also encourage you to pay more attention to 5.11 footwear, particularly the A.T.L.A.S. family and the 5.11 A/T 6″ Non-Zip Boot reviewed here — or its membrane-equipped version. It is also unisex footwear, and the boots are featured in advertising on women's feet as well.
They are very comfortable from the very first moment — straight out of the box, functional and durable, and difficult terrain, sharp rocks and other harsh environmental elements do not seem to bother them. After several years of experience with this series, I can honestly say that they are reliable boots for long marches with gear, and they look good too, which of course does not hurt either.
5.11 has supported our work from behind the desk and in the field for years, so by visiting one of the 5.11 stores in Poland and perhaps making a purchase there, you also support our work. We encourage you to check the list of the growing number of authorized dealer stores in Poland!
This article was created as part of an advertising collaboration; however, the authors of this website respect their readers and themselves, and therefore always present their independent opinions. No advertiser, not even the best one, can ever influence them.
Photos: Shooting.Media / Paweł Cięcielowski, Medard Starzycki, Paulina Duda
