When cold weather moves in we can keep hitting the trails in the Rab Cirrus Flex Hooded Jacket. The packable design fits neatly in our backpack so we can break it out as temperatures drop as we push towards the summit, and the breathable design efficiently dumps heat so we stay comfortable while we're hiking. PrimaLoft Silver RISE insulation provides lofty warmth, even while wet, and the stretch side panels offer superb mobility while we scramble across boulder fields and wind our way up switchbacks.