We're working out what we think - we'll add our view here!
Mammut says:
The Aenergy Beanie is a helmet-compatible and lightweight functional beanie that is a perfect mountain companion. A combination of stretchable material and an anatomical cut means the beanie is a great fit and is very comfortable to wear. The laser-cut slits make it easy to secure your goggles.
We're working out what we think about Mammut's Aenergy Beanie, we'll add our comments here in due course.
