Reader rating
Rate it and you move it. Community ratings re-rank this product inside its Top 10 list.
Expert-picked, reader-ranked. Our editors choose the products and the launch order; member star ratings move picks up or down over time.
The La Sportiva Nucleo High II GTX bridges the gap between agile day hiking and technical mountain travel. Constructed around a sleek, supportive women's last, this boot utilizes premium Nubuck leather paired with GORE-TEX Surround technology. Unlike traditional waterproof booties that only vent through the upper, Surround allows moisture vapor to escape downward through an open-spacer mesh layer beneath the footbed, venting out through side ports. The result is noticeably cooler, drier feet in warm, wet conditions. Trail performance is precise and confident. The Nucleo High II features La Sportiva's signature Vibram Nano outsole with an Impact Brake System, delivering exceptional friction on slick rock and aggressive downhill bite in soft dirt. The ankle cuff provides high-reaching support without restricting natural biomechanics, thanks to flexible Cordura inserts at the flex points. It has enough torsional stiffness to manage a forty-pound pack over alpine passes, yet it weighs less than traditional leather heavyweights. The fit is distinctly European: narrow through the midfoot and taper-toed up front. Hikers with broad forefeet will likely experience pressure on the outside edge of the pinky toe. The leather upper is also thinner than old-school full-grain boots, meaning prolonged contact with sharp scree will scuff the exterior faster. **Highlights** - GORE-TEX Surround technology provides 360-degree breathability - Durable, supple Nubuck leather upper with Nano-Cells inserts - Vibram Nano outsole with Impact Brake System for technical traction - Outstanding balance of torsional support and low carry weight - Precise ankle collar wraps securely without hot spots **Watch-outs** - Narrow European fit will not accommodate wide forefeet - Thin nubuck shows abrasive wear quickly on loose scree
Pros
- Gore-Tex Surround exhausts foot sweat significantly better than standard booties
- Aggressive Vibram outsole provides exceptional braking control on loose descents
- Minimal break-in time compared to traditional heavy leather backpacking boots
- Snug heel cup locks the rear foot down securely to prevent uphill heel slip
Cons
- Tapered toe box runs narrow and will cramp broad or high-volume forefeet
- Supple nubuck leather scratches easily against abrasive rock and loose scree
Best uses
- Technical day hiking
- Weekend backpacking trips
- Variable mountain terrain
- Wet-weather shoulder seasons
Specifications
- Upper Material
- Nubuck leather with Nano-Cell inserts
- Waterproof Tech
- GORE-TEX Surround
- Outsole
- Vibram Nano with Impact Brake System
- Ankle Support
- High cut with Cordura flex zones
- Footwear Volume
- Low to medium volume; narrow last
- Weight
- Approximately 13.4 oz (380 g) per boot
Pricing
Manufacturer list price · checked Jul 14, 2026
Prices move with sales and stock — confirm the live offer at the retailer below.
Full catalog listing & offersBest for
Technical day hiking, Weekend backpacking trips, Variable mountain terrain, Wet-weather shoulder seasons
Where to buy the Nucleo High II GTX
We don't have a direct Amazon listing on file yet — this opens an Amazon search for the exact make and model.
Some links are affiliate links. Buying through them supports our testing at no extra cost to you.
The La Sportiva Nucleo High II GTX occupies a distinct sweet spot in modern footwear. Many hikers today gravitate toward featherweight trail runners, while traditionalists stick to heavy, stiff boots that take weeks to soften. The Nucleo High II splits that divide with technical intention. It takes cues from La Sportiva's deep alpine pedigree, wrapping the foot in supple nubuck leather while keeping overall carry weight remarkably low. What sets this boot apart on the trail is the integration of Gore-Tex Surround technology. Instead of suffocating your feet inside a standard sealed waterproof bootie, the design vents internal heat and moisture vapor downward through an open-spacer mesh layer beneath the footbed and out through specialized side ports. In warm rain, damp brush, or humid alpine ascents, it keeps socks noticeably drier than standard membrane constructions. For female hikers navigating rocky singletrack, talus, or carrying moderate multi-day packs, the Nucleo provides reassuring stability without feeling clunky. It delivers firm torsional rigidity and protective ankle coverage, yet flexes naturally under the forefoot. If you want the security of mountain leather without the dreaded swamp-foot penalty, this is one of the most capable tools on the shelf.
Surround Waterproofing Mechanics
Traditional waterproof membranes keep creek water out but inevitably turn your boots into miniature saunas on steep climbs. Gore-Tex Surround tackles this problem mechanically. The Nucleo High II channels heat and vapor through an open spacer beneath the insole and pushes it out through engineered side ventilation grids along the midsole. During prolonged crossings through wet grass, mud, and shallow streams, external moisture stays locked out, but the typical clammy sock syndrome is dramatically reduced. It is not as breezy as a non-waterproof mesh trail runner on a blistering dry afternoon, but among full-height leather boots, this setup sets the standard for moisture management in shifting climates.
Underfoot Grip and Braking
La Sportiva outfits the boot with a Vibram Nano outsole featuring their proprietary Impact Brake System. The lug pattern is arranged with opposing slant angles, which actively improves braking force on steep descents and enhances forward propulsion on the push-off. In loose dirt, slick granite slabs, and decomposing organic litter, the rubber compounds bite tenaciously without feeling squirmy underfoot. The tread shed mud efficiently during our tests, preventing the heavy, slick buildup that plagues tighter lug arrays. If your routes involve off-trail scrambling or descending loose gravel banks, the sole geometry gives you the traction authority usually reserved for dedicated mountaineering approach boots.
Flex, Support, and Pack Loads
Trail-running shoes often buckle under the weight of a multi-day backpack, causing foot fatigue when you are side-hilling across scree. The Nucleo High II avoids this by pairing moderate forefoot flexibility with reliable torsional rigidity. The molded EVA midsole cushions repeated heel impacts, while the TPU inserts prevent the chassis from twisting uncomfortably over uneven bedrock. The padded ankle collar sits high enough to prevent rolling on tilted ground, but strategic Cordura flex zones at the heel tendon eliminate the stiff, shin-biting break-in period common to rigid backpacking boots. It easily handles thirty to forty-pound pack loads without compromising natural walking rhythm.
The European Fit Profile
Fit is where you need to be realistic about La Sportiva. The women's last is distinctly European: sleek, narrow through the waist, and snug around the heel pocket. This provides exceptional foot retention, eliminating the heel lift that causes blisters on steep ascents. However, the toe box tapers inward fairly aggressively across the lateral edge. Hikers with square, wide, or high-volume forefeet will feel pinching against the outside toes, especially as feet swell over long mileage. If you have low to medium-volume feet, the boot locks down seamlessly, but broad-footed backpackers should consider wide sizing or look at alternative brands entirely.
Durability and Abrasion Trade-Offs
The nubuck upper is soft right out of the box, which keeps the boot exceptionally light and supple. The trade-off is surface durability. While heavy full-grain leather can withstand years of scraping against razor-sharp scree, the Nucleo's thinner nubuck will scuff and show trail scars quickly in abusive alpine talus. Rubber toe and heel caps protect the highest-wear impact zones, but the side exhaust mesh ports demand basic maintenance. If caked in heavy clay or dried mud, the breathability drops noticeably until you brush the ports clean. It is durable enough for seasons of rough trail use, but it is not an indestructible, resole-forever workhorse.
The Competitive Field
When stacked against the Lowa Renegade GTX Mid, the Nucleo feels far more agile, technical, and breathable, though the Renegade offers a roomier, more forgiving forefoot out of the box. Compared to lightweight synthetic boots like the Salomon Quest 4, the Nucleo rides lower to the ground with better tactile feel for the rock, trading away a bit of ankle armor for superior temperature regulation. If your trails are entirely dry and smooth, an unlined trail runner remains cooler and lighter. But when you need true ankle support, reliable waterproofing, and edge control over technical mountain terrain, the Nucleo justifies its price tag.
How we picked
We started with a long list of women's hiking boots that people actually buy, cut anything that could not clear our baseline for durability and field performance, then ranked the 10 that were left against the same criteria. Rankings are editorial. No brand pays for placement, and affiliate links never move a pick up or down.
- Fabric behavior over time
- Breathability, DWR life, loft retention, and how the piece performs after repeated washing.
- Real-world durability
- How the material, stitching, or steel holds up after a season of hard use — not how it looks new.
- Performance in bad conditions
- Wind, rain, cold, and grit are the test. Anything that only works on a nice day gets marked down.
- Weight and packability
- Every ounce has to earn its place in the pack, but not at the cost of something that fails in the field.
- Ease of use
- Setup, adjustment, and maintenance with cold hands, in the dark, without the manual.
- Value at its price point
- Compared against the closest competitors in the same tier, not against cheaper gear in a different class.
Nucleo High II GTX — frequently asked questions
- Is the Nucleo High II GTX worth it?
- We rank it #4 in Women's Hiking Boots. The La Sportiva Nucleo High II GTX bridges the gap between agile day hiking and technical mountain travel. Constructed around a sleek, supportive women's last, this boot utilizes premium Nubuck leather paired with GORE-TEX Surround technology.
- What is the Nucleo High II GTX best for?
- Best for technical day hiking, weekend backpacking trips, variable mountain terrain and wet-weather shoulder seasons. Standouts: gore-tex surround exhausts foot sweat significantly better than standard booties and aggressive vibram outsole provides exceptional braking control on loose descents.
- What are the downsides of the Nucleo High II GTX?
- Tapered toe box runs narrow and will cramp broad or high-volume forefeet and Supple nubuck leather scratches easily against abrasive rock and loose scree.
- What are the key specs of the Nucleo High II GTX?
- Upper Material: Nubuck leather with Nano-Cell inserts · Waterproof Tech: GORE-TEX Surround · Outsole: Vibram Nano with Impact Brake System · Ankle Support: High cut with Cordura flex zones · Footwear Volume: Low to medium volume; narrow last
- Surround Waterproofing Mechanics — what should I know about the Nucleo High II GTX?
- Traditional waterproof membranes keep creek water out but inevitably turn your boots into miniature saunas on steep climbs. Gore-Tex Surround tackles this problem mechanically.
- Underfoot Grip and Braking — what should I know about the Nucleo High II GTX?
- La Sportiva outfits the boot with a Vibram Nano outsole featuring their proprietary Impact Brake System. The lug pattern is arranged with opposing slant angles, which actively improves braking force on steep descents and enhances forward propulsion on the push-off.
Compare side by side
Put the Nucleo High II GTX against any other pick on this list — specs, price, pros, cons and reader ratings.