La Sportiva’s latest addition to their mountaineering collection is the G5. An ultra-technical, high altitude, and lightweight boot that works well across a variety of terrain under 6000m. The boot makes use of class-leading technology to deliver unrivalled performance and comfort for its weight bracket.

We take a closer look at some of this technology and how it makes this boot quite outstanding.

Key Features

  • Inner boot
  • Four layer insulating structure
  • Velcro closure makes for easy off/on
  • Boa quick lacing system
  • B3 rated
  • Crampon compatible
  • Outer boot
  • Protective stretch Cordura gaiter
  • Flex Zone
  • Vibram Matterhorn sole with Impact Brake System
  • 855g (single boot size 42)

Four layer insulating structure

Four layer insulating structure of the boot

The Inner shell is made up of four layers. A top layer of waterproof Cordura, underneath which you find an insulating felt followed by an insulating and abrasion resistant polyethene barrier with a breathable mesh at the bottom. This combination maximises warmth and protection similar to a traditional two shell boot while minimising the weight to that of a one shell.

Boa quick lacing system

Boa quick lacing system

The inner shell makes use of two closure systems; one for the main body of the foot (Boa) and another for above the ankle (Velcro strap). Easy to use, the boa system allows for precise tension and volume adjustment without the need to take your gloves off. In the Velcro strap you get further support and the ability to customise the fit of the upper in isolation from the lower to suit your terrain (walking or climbing).

Vibram Matterhorn sole with Impact Brake System

The sole of walking boot

Specially tested and designed for use at high altitude, the Matterhorn outsole is made from a firmer than normal compound and maintains its performance even at low temperatures. Differently graded lugs provide excellent traction and the Impact Brake System assists downhill travel.

Flex Zone

The Back of a walking Boot

At the back of the ankle you’ll find a flex zone. This area of the boot makes it easier and more comfortable to walk across rough terrain without compromising stiffness for climbs.

Overall Verdict

This boot is ideal for anyone that requires a highly customisable and precise fit, wanting to hike/scramble high-altitude routes (in challenging weather conditions) and have the stiffness to excel on ice climbs.

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Posted by: Pete F Tagged as: Climbing Equipment,Mountain Innovations