GRAND DRU GTX
The ultimate workhorse mountain boot beloved by backcountry guides, mountain hunters and wilderness workers, the Grand Dru GTX provides serious support and protection in rugged environments, with a full-coverage rand and a durable suede leather upper.
- GORE-TEX® Performance Comfort keeps feet dry
- Semi-automatic crampon compatible
- Vibram® Essential outsole for outstanding traction
- Low profile PU and TPU midsole provides lightweight cushioning and support
- Full-perimeter rubber and PU rand for protection and durability
Features
Technical Specifications Specifications
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- Insole: Anatomic nylon + fiberglass insole with EVA top layer for maximum stability support and torsion control
- Exterior TPU: Exterior TPU containment frame in differentiated thicknesses for crampon compatibility
- Midsole: PU Midsole with differentiated thicknesses for more shock-absorption
- Outsole: Vibram outsole in MONT rubber compound for durability
- Tread Design:
Technologies

Vibram® is the world leader in high performance rubber soles and compounds, targeted to the outdoor, work, recreation, fashion, repair and orthopedic markets.

GORE-TEX® membrane contains over 9 billion microscopic pores which are approximately 20,000 time smaller than a drop of water, but 700 times bigger than a molecule of moisture vapor. So while water in it's liquid state can't penetrate the GORE-TEX membrane, the boot still remains breathable.


The ACTIVimpact Technology™ system is a construction process which uses materials that help absorb the negative impact of ground shock. This reduces stress on the lower limbs and allows you to transfer energy more easily into the activity at hand.

Sizing
SCARPA Euro US Sizing Chart
All SCARPA non-plastic footwear and our Alien 3.0 uses European sizing.
- 1 Euro whole size = 6.6 mm = 0.26 inches
- 1 US whole size = 8.4 mm = 0.33 inches
- The 30 Euro sizes below cover the same size range as 24 US sizes
- Euro sizes provide a better, more precise fit for your intended use
- For mountaineering boots, upsize (1/2+ sizes) depending on desired fit.
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