East Step-In Band – Wide opening range thanks to the new easy step-in liner construction

Articulated knee construction

Designed with maximum precision for optimal uphill performance and astonishing downhill reliability

semi-soft foam pad with a smooth inner face that's designed to fit snugly behind your existing boot tongue

This boot was built to take on anything you or the mountain can throw at it

Arc'teryx Proton Pant W size-61 East Step-In Band – WideLightweight warmth, temperature regulating airflow, performance stretch the Proton Pant is all mountain versatile. Wear it as a midlayer in cold conditions, or pull it on as a standalone for hikes and approaches. Ultralight Octa Loft knit insulation combines warmth and breathability, air permeable Fortius Air 50 outer is light, durable, and stretchy, and a DWR treatment repels moisture. The trim fit layers easily, and articulated patterning works with