Tecnica Forge S GTX Hiking Boots Review: Tested on the Trail
With the Forge, Tecnica introduced a distinctive approach to hiking footwear: a thermoformable boot designed to be customized to the shape of the wearer’s feet. The Tecnica FORGE S GTX combines this personalized fit with a GORE-TEX membrane, Vibram Megagrip outsole, and a flexible construction aimed at improving comfort on varied terrain.
I purchased these boots on June 26, 2022, primarily for paragliding hike-and-fly adventures and BASE jumping excursions. After having them thermoformed at the store, I wore them the following day. Remarkably, I experienced no blisters, pressure points, or other discomfort during my initial use.
Hands-On Testing
My testing has focused on how the Tecnica Forge S GTX performs outside controlled conditions. I have used the boots on dirt, grass, rock, snow, mud, and wet terrain, allowing me to evaluate their performance across different surfaces and weather conditions.
During use, I paid particular attention to the areas that matter most in a hiking boot: underfoot comfort, traction, waterproof protection, ankle support, flexibility, and stability. I also evaluated how the boot felt during longer outings and how well the upper and outsole handled contact with rocks, branches, and other rough surfaces.
The observations throughout this review come from my personal use of the boots. Manufacturer specifications are included where relevant, but the comments about comfort, fit, grip, waterproofing, and trail performance are based on my own experience with the Forge S GTX.
2026 Long-Term Update
Update: I originally purchased the Tecnica Forge S GTX in June 2022 and have continued to use and evaluate the boots since the original review. This update adds my longer-term ownership experience and puts my earlier observations about comfort, waterproofing, traction, and durability into context.
- UPPER – High abrasion resistance stretch fabric with TPU lamination for protection and durability
- LINING – Gore-Tex liner provide the ultimate combination of waterproofness and breathability
- OUTSOLE – Exclusive Vibram outsole with Megagrip compound results in an approach-like grip on rocky and wet terrain
| Feature | Tecnica Forge S GTX |
|---|---|
| Best for | Hiking and backpacking |
| Fit | Thermoformable |
| Waterproofing | GORE-TEX |
| Outsole | Vibram Megagrip |
| Upper | Nubuck leather / stretch fabric |
| Sole feel | Flexible |
| Weight | 2 lb 11.68 oz per pair |
| Resoleable | Yes |
| Your testing | Dirt, grass, rock, snow, mud and wet conditions |
| Main strength | Customized comfort and grip |
| Main limitation | Less precise on highly technical terrain |
Tecnica Forge S GTX Boots Review
Tech Specs:
- Weight: 585 g for the shoe against 820 for my Lowa
- Waterproofing: yes
- Type of Waterproofing: GORE-TEX Extended Comfort membrane
- Materials: Elastic fabric (upper) Gore-Tex (lining)
- Footwear Height: Over-the-ankle
- Footwear Closure: Lace-up
- Upper: 1.8mm nubuck leather/stretch fabric
- Lining: GORE-TEX Extended Comfort membrane
- Sole: Vibram (the universal reference)
- Midsole: 2-layer EVA/1-layer ESS
- Support: Thermoplastic urethane shank
- Outsole: Vibram Forge with Megagrip
- Can Be Resoled: Yes
- Sustainability: Contains recycled materials
- Best Use: Backpacking
Who Are the Tecnica Forge S GTX Best For?
The Tecnica Forge S GTX is best suited to hikers and backpackers who prioritize a comfortable, customized fit, waterproof protection, good grip, and a relatively flexible hiking boot. The thermoformable construction is particularly useful for hikers who have difficulty getting a comfortable fit from conventional boots.
If you’re comparing different types of hiking footwear before choosing a pair, our guide to the best hiking boots is a useful place to explore other options. For highly technical terrain where precise edging and maximum sole stiffness are priorities, a more rigid mountain or technical hiking boot may be a better fit.
Pros
- Ergonomic thermoforming
- Excellent design and shape
- Lightweight and compact
- Superimposed tongue
- Very flexible sole
Cons
- Precision of support on the front tip
- Laces quality could be better
Comfort and Support
When I started to test these boots on my feet, I immediately noticed their lightness (585 g for the shoe compared with 820 g for my Lowa). If I felt the difference right from the start, I could imagine how noticeable it would become at the end of a full day or, even more so, during a longer trek. For comparison, you can also read my Lowa Ticam II GTX hiking boots review.
The roll of the foot is fluid and natural even if the thermoformed synthetic fabric lacks a little flexibility compared to leather. Besides having a shoe already on your foot, you don’t need to break it to make it. Tested on dirt, grass, rock, snow and mud, Vibram Megagrip rubber adheres very well to the ground, even downhill.
The high upper is also flexible and allows great flexibility of front-to-back movement with a small indentation at the rear of the collar. It is not specifically padded, but it remains comfortable.
Another design asset that I appreciated is the one-piece overlap tongue system that overlaps the necklace like a sheet that is rolled up on itself and connected by fabric to let nothing pass. Indeed, when others shift on the outside of the foot over the years and steps, it remains structurally in place. Therefore, it will never press on the outer malleolus or leave an open space on the ankle (earth, sand, water, snow, etc.).
The self-locking laces system is simple and quite effective. Once the right tightening compromise has been found, ankle support is quite satisfactory, even if it could be more precise. The round and thin but robust laces. However, the double-knot became mandatory after several hundred meters.
Waterproofing and Breathability
A very important element in the choice of my hiking boots is waterproofing. I quickly tested it, and the Tecnica Forge S GTX lived up to its promises. Almost submerged to the top of the stem for several minutes, I suffered absolutely no water intrusion. We can therefore cross lookouts without apprehension.
The Gore-Tex membrane manages breathability well, even if it honestly does it slightly less well than leather does. I had no feeling of suffocation or overheating of the foot, which bathes in its tropical humidity. Besides this, the outer synthetic fabric showed real resistance to abrasion despite rubbing on rocks and branches. It’s here to stay.
Uses
With its flexible sole and high upper, the Tecnica Forge S GTX boot is mainly designed for hiking with unevenness and treks. For hikers who prefer a lighter and more trail-oriented alternative, you can also compare this boot with our Salomon X Ultra 3 GTX review, which looks at another waterproof hiking option.
On the other side of the same coin, the tip has shown limits of precision of support during more technical passages on committed routes. In this case, hiking boots with more rigid soles will be preferred.
If you’re considering other options for mixed or more demanding hiking terrain, our Scarpa Rush TRK GTX review provides another boot to compare with the Forge S GTX. However, its front stone guard is very wide, and the sole is strong enough to protect the arch of the foot on rocks or rungs when using via Ferrata.
FAQs About Tecnica Forge S GTX hiking boots
Is there any issue with the membrane delaminating on the toe of the boots?
Some users have reported issues with the membrane on the toe delaminating after a few uses. However, this could be attributed to individual cases, and returning the boots to the retailer is an option.
How is the sizing of Tecnica boots, and do they run true to size?
Tecnica boots are praised for their accurate sizing. This means that in most cases, you can rely on your standard shoe size when purchasing Tecnica boots. However, it’s always a good idea to try on the specific model you’re interested in, if possible, as individual preferences for fit can vary.
What is the lifespan of these boots and is the cost justified?
Actual lifespan will depend on mileage, terrain, frequency of use, and maintenance. My own long-term experience can provide useful insight into durability, but I would not treat a specific lifespan as guaranteed. The cost, at around $300, maybe a concern for budget-conscious buyers, but some find the performance justifies the price.
How comfortable are the boots for extended periods of use with a heavy pack?
These boots provide excellent comfort and support even during extended periods of use while carrying a heavy pack. They feature a cushioned midsole, supportive ankle structure, and durable outsole that work together to reduce fatigue and maintain stability on uneven terrain.
Is the lacing system effective, and are there any issues with it?
We find the thin laces and lacing system a potential drawback, as they can dig into the tongue of the boot. This might require careful adjustment to avoid discomfort or compromise support.
Are Tecnica boots suitable for individuals with narrow feet?
The Tecnica Forge S GTX can work well for hikers with narrower feet, but individual fit preferences vary. I found the thermoformable construction particularly useful because the boot can be customized to the shape of the foot.
If you’re unsure how much room you should have in a hiking boot, our guide on how to choose the right hiking boot size covers fit, sizing, and toe-room considerations in more detail. Yes, Tecnica boots are suitable for individuals with narrow feet.
The brand is often praised for its accurate sizing, and users with narrow feet have reported a good fit with Tecnica boots.
The Verdict
After using the Tecnica Forge S GTX for hiking and outdoor activities, I found its biggest advantage to be the combination of a thermoformed fit, flexible sole, waterproof GORE-TEX construction, and reliable Vibram Megagrip traction. The ability to mold the boot to my feet made the break-in period essentially unnecessary, and I experienced no blisters or uncomfortable pressure points during my testing.
The boot is not perfect. The lacing system could provide more precise support, and the flexible sole is less suited to highly technical terrain where a stiffer platform is preferable. However, for hiking and backpacking where comfort, grip, waterproofing, and all-day wearability matter, the Forge S GTX has several practical advantages.
My main takeaway: the thermoformable fit is the feature that separates the Forge S GTX from many conventional hiking boots, while the GORE-TEX membrane and Vibram Megagrip outsole make it practical for wet and varied terrain.
