Updates to La Sportiva Nucleo High GTX

  • The upper of the Nucleo High GTX has the Nano-Cell Technology and Gore-Tex Surround membrane, making the boot breathable. Both features allow ventilation and expulsion of moisture from the inside. Also, the 3D Flex system facilitates smooth movement of the ankles while maintaining its stability.
  • A compression molded EVA with TPU inserts makes up the midsole of the boot. It is chiefly responsible for cushioning and support. The adapted STB control system aims to deliver a more comfortable and stable feeling. It also has torsional resistance.
  • The Vibram Nano sole works with the Impact Brake System to provide traction and improved braking effect. The said outsole technology aids in shock absorption as well.

Size and fit

This La Sportiva footwear is for men and women. It uses a lace-up closure for a snug and customized fit. A special set of eyelets placed in the ankle section keeps the heel locked when laced properly.

Outsole

The outsole of the Nucleo High GTX features the Vibram Nano sole with the innovative Impact Brake System (IBS). This system absorbs ground impact, aids in traction and enhances downhill grip. The asymmetrical design of the lugs allows the boot to have more contact on the ground, thus improving shock absorption and reducing fatigue.

Midsole

The Nucleo High GTX midsole is a compression molded EVA with TPU inserts. These materials are durable, resistant to wear and do not absorb water. They provide comfort and torsional stability by having control over foot rotations.

The STB Control System, a derivative feature from the mountain running line of La Sportiva, is added to the boot. This structure envelops the medial portion of the midsole with its anti-torsion components. It also enables a more comfortable, stable ride.

Upper

The upper of the Nucleo High GTX is made of nubuck leather which works in conjunction with the Nano-Cell Technology. Nubuck leather is known for its flexibility and durability. Meanwhile, the breathable cells wrap the boot and provide structure. It also allows the expulsion of humidity from the boot.

La Sportiva Nucleo High GTX is equipped with Gore-Tex Surround. This technology gives waterproofing and breathability. It is mainly featured in outdoor footwear designed for warmer conditions. Warmth and moisture can vent out through the “spacer” and to the sides of the boot, hence the name Surround which is marketed as providing 360-degree breathability. It keeps the foot comfy and dry in humid temperatures.

The 3D Flex system is incorporated in the boot. It features multidirectional hinges that allow smooth movement of the ankle while maintaining its stability. Furthermore, it renders enhanced foot control and steadiness on challenging terrains by allowing more surface contact. It also secures heel and delivers a better fit.

For added protection, the upper has a PU leather toe cap and heel. The soft, padded cuff adds comfort.

Nice to know

  • This leather hiking boot received Outside Magazine’s Gear of the Year 2017 award.
  • The Nucleo High GTX belongs to the mountain hiking line of La Sportiva. The DNA composition of this line is designed for lightweight hiking. The three main lines of chromosomes that work in synergy came from Approach (20%), Mountain Running (50%) and Mountaineering (30%). These composition addresses fit, flexibility and cushioning and sole grip, respectively.

Facts / Specs

Weight: Men 467g / Women 381g
Use: Day Hiking, Backpacking
Cut: High cut
Features: Lightweight / Orthotic friendly / Removable insole
Waterproofing: Waterproof
Width: Normal
BRAND Brand: La Sportiva

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Author
Paul Ronto
Paul Ronto

Over the past 20 years, Paul has climbed, hiked, and ran all over the world. He has summited peaks throughout the Americas, trekked through Africa, and tested his endurance in 24-hour trail races as well as 6 marathons. On average, he runs 30-50 miles a week in the foothills of Northern Colorado. His research is regularly cited in The New York Times, Washington Post, National Geographic, etc. On top of this, Paul is leading the running shoe lab where he cuts shoes apart and analyses every detail of the shoes that you might buy.