FEATURES of the Arcteryx Fortrez Beanie Made with breathable, fast drying Polartec? Power Stretch fleece with Hardface? technology Sheds snow and wicks moisture Low profile and form fitting fits well under hoods and helmets Lightly insulated Made with breathable, fast drying Polartec Power Stretch fleece with Hardface Technology A four-way stretch fabric that allows for excellent athletic movement and good breathability to maintain comfort Some products feature Hardface Technology for a higher level of abrasion resistance