The ALIEN 4.0 from Scarpa is a ski touring boot that incorporates the latest technologies developed by the brand.

This model benefits from an improved construction that has been cleverly designed to reach the highest peaks with efficiency. With a carbon bottom shell, it has good lateral rigidity and perfect protection for the foot. An insulating liner allows the shell to be completely sealed at the ankle.

Reliable and fast, the integrated BOA system allows for precise and efficient tightening directly on the liner and ensures better foot support. In addition, the carbon fiber collar offers a more progressive tibial support on a carbon support.
This boot also features a Race 4.0 SL liner that provides perfect support on the descent and great amplitude on the step, ideal for competitors looking for efficiency.

Very light, the most seasoned ski-mountaineers will be able to count on it to surpass their limits.