Climbing the highest peaks requires the right gear. Our ZARATHUSTRA GTX RR BOA is the answer to technical mountaineering and ice climbing, offering state-of-the-art ultralight construction.

Uncompromising lightness
The integrated outer gaiter, made of durable, seamless synthetic mesh, adapts precisely to the climber's movements, providing protection from rocks and debris and total freedom of movement. The interior is stabilized by a high-performance bootie with a padded, stretch gusset that provides maximum comfort, regardless of the tension given by the BOA Fit System, while the hook-and-loop strap on the top ensures a secure fit.

Integrated Safety: RECCO® reflector and BOA Fit System
Safety is paramount. The RECCO® reflector built into our boot allows immediate tracking in case of loss or emergency from rescue personnel equipped with the appropriate detector. The integrated BOA Fit System wraps around the gaiter and allows quick and precise adjustment of the inner boot from the outside, without having to remove gloves.

Unbeatable performance in all conditions
The GORE-TEX Insulated Comfort membrane provides waterproof and breathable protection in all weather conditions. Carbon fiber and aluminum footbed accentuates rigidity to support the crampon without compromising lightness, enhancing performance and thermicity. The dual-density PU midsole provides excellent support. Vibram Penia tread with deep lugs provides a secure grip on wet and icy surfaces, and the integrated Professional Crampon System (PCS) fits major crampons perfectly. The 360-degree binding protects against bumps and impacts against rocks and other elements.
Thermal insoles coupled with an aluminum film retain heat.

Technical features