Magic fabric - Rab Borealis Jacket - Men's

Perfect piece for active moving, sheds wind, snow and some water. Rab's STS Matrix material is uber-durable, it is very thin, silky smooth and stretchy and can be worn right next to your skin, but at the same time uber-durable: one of the best fabrics I've ever worn, really. Handjamming in the granite cracks, rusty ski edges, all combinations of rough velcro-buckle hot spots ... no SIGNS (!). For the prev version of Borealis (known as Boreas) the seams was the weak spot, as there were exposed and peeled immediately, but seams are all hidden in the current gen Borealis.
The only thing I can mention now: the color of the fabric faded noticeably on shoulders after two seasons of active use.
Cut is nice, more arcteryx'y than typical american, long sleeves broad shoulders&chest, true waist size.
Personally more often prefer pull-on version as more hardcore and technical combo of base layer and windshell.
Jacket version is more of a "jacket" with almost the same functionality.
Essential piece of my wardrobe all year round.