The Arc'teryx Rush Jacket uses lighter GORE-TEX PRO ePE fabric that maintains the same backcountry-proven durability you've come to rely on. The streamlined fit with easier pocket access and reduced fabric weight makes transitions quicker and ascents less taxing. With its focus on uphill efficiency that doesn't sacrifice downhill performance, this jacket proves you don't need to carry extra weight to get the protection and functionality serious touring demands.