The RAB Borealis Jacket is made with lightweight and stretchy Matrix fabric, allowing complete freedom of movement. Designed for use on long multi-pitch routes where the weather can be variable, UPF 50+ protects from the sun, while features like the YKK front zip with chin guard and half hem drawcord offer adaptability and shelter from the wind as conditions vary. The two YKK zipped, mesh-lined Napoleon chest pockets ensure access to the essentials when wearing a harness.