Our verdict
The nbsp; |   is a comfortable, sturdily built, lightweight mountaineering boot that is easy to break-in. Users were pleased with its grippy outsole, sufficient ankle support, and high durability. However, some users pointed out the shoe could not keep away the moisture effectively. Also, a few mountaineers thought the lace-up closure was poorly made and inefficient.
Pros
- Sturdy build
- Incredibly lightweight
- There are virtually no wet trails to tackle
- Track and field
- Boot Grading for Crampons
Cons
- Boot Grading for Crampons
- Laces don't fit snugly
Who should buy the nbsp; |  
This is a practical option for users who prefer a 2-in-1 option, as it is amazing for both backpacking and mountaineering. Buy if:
- You need a lower-priced mountaineering boot
- There are virtually no wet trails to tackle
Virtually zero break-in period
The Couloir rubber delivers the traction needed on uneven terrain. This rubber by Vibram is also durable and resistant to abrasions.
Moreover, the mountaineering boot features deep lugs on its outsole. The strategic pattern assists in maintaining a strong hold on challenging grounds. The outsole also comes with a heel groove, serving as a crampon attachment.
Responsive, insulated cushioning
The cushioning is provided by the styrene-butadiene rubber (SBR) Aircushion. This component is soft, flexible and responsive. It also offers insulation in hot or cold environments.
Supportive midsole
The nbsp; |   comes with 8-millimeter high-density nylon insole with an anti-torsion plate. This combo gives underfoot support enough for tackling uneven grounds and supporting mountaineers or backpackers with heavy loads. The footbed is removable so users can replace it with their preferred insole.
Protective upper materials
The 2.8 mm Idro-Perwanger roughout leather is a silicone-infused material. It makes the Karakorum water-repellent yet breathable. It also adds durability to the boot. The upper also features a padded Cordura cuff, providing comfort. Cordura fabrics are made using high-tenacity fiber technologies which make it a great material for durable products.
nbsp; |   has the Hydrofil nylon incorporated in the Dry-Best lining. Hydrofil is a special type of nylon blended with other fibers that has increased strength, comfort, and absorbency. The combo in this shoe and keeps the user’s foot dry and cool.
The upper has La Sportiva's proprietary 3D Flex system. This multi-directional hinge enables natural movement of the ankle while maintaining support. It's a component that reduces the mountaineering boot's break-in period.
A Vibram rubber rand runs from the forefoot to the midfoot area. It acts as a bumper to protect the toes. It also shields the boot from abrasions.
Crampon compatibility
According to La Sportiva, the outsole is compatible with New-Matic crampons. This 12-point C2 crampon works well for alpines, routes with moderate waterfalls, and general mountaineering. However, mountaineers may use semi-rigid crampons from the brand of their choice.