ALIEN 4.0

The Scarpa Alien 4.0 is the nec plus ultra of skimo racing boot technology.
The Scarpa Alien 4.0',s shell and shaft are made from hand-laid carbon fiber. This provides the best combination of strength and rigidity at a ridiculously low weight, with the Alien 4.0 weighing just 1.26kg/pair, 27MP.
The carbon fiber shaft has Pebax overlay front panels for a contoured closure and progressive power transfer when skiing.
With a massive 76° shank rotation, the Scarpa Alien 4.0 offers natural stride comfort, regardless of the flexibility of your ankles, so you can gain altitude as quickly as possible.
The shaft and shell use Dyneema lacing plus the BOA system to provide a quick, reliable closure and sufficient control on the downhills.
The BOA® floating closure system is located under the Light Shield Tech gaiter, ensuring quick, easy and secure fit transitions.
The patented BOA Fit system consists of three integral parts: a micro-adjustable dial, super-strong lightweight laces, and low-friction lace guides. The Alien 4.0 system is mounted on a Pebax tongue protector panel and compresses into the vamp as it is tightened.
The Alien 4.0 BOA Fit System is mounted on a Pebax tongue protector panel and compresses into the instep as it is tightened.
The Speed ​​Lock Lite ski step mechanism is integrated with the shank closure via a Dyneema lace, for a quick single-action transition.
A Pebax cap protects the toe area from bumps and scratches to ensure reliability. The Scarpa Alien 4.0 has the Vibram UFO sole to ensure good grip when the rules of the race or the terrain make hiking necessary.

• If your priorities are minimum weight and maximum speed for maximum running performance, you need the Alien 4.0.
• Shell: Hand-laid carbon fiber shell is super stiff and extremely light and has a protective Pebax® toe cap
• Shaft: Hand-laid carbon fiber shaft for the ultimate in lightweight stiffness, with Pebax® overlay front panels for a contoured closure.
• Ski/Hike Mechanism: Scarpa',s Speed ​​Lock Lite is simple and secure, with 4 forward tilt positions from 9° to 15°.
• Closure: Dyneema Cord + BOA® Fit System. The shank closes via a single-action Dyneema® lace that interfaces with the ski/hike mechanism to speed up transitions. The BOA® Fit System lets you find the perfect fit with Scarpa',s exclusive BOA® Fit System floating closure, which provides precise, secure fits with no pressure points.
• Sole: The Vibram® UFO sole uses Vibram',s TOP85 compound that offers great durability and grip in cold conditions.