What Our Gearhead(R) Experts Are Saying:"I wear the Ascendor Summit Hoodie when I need warmth without overheating on steep winter climbs. The hybrid design dumps heat on the move, and the wind-resistant panels cut the chill up high. It's one of the most technical fleeces I've used-it layers great and moves well on route."Alpine climbing demands balance: warmth without bulk, breathability without exposure, and gear that works with us-not against us. That's where the Ascendor Summit Hoodie from Rab comes in. Designed for high-output missions in the mountains, this advanced fleece blends targeted insulation and ventilation with mapped weather protection to support winter movement in its most technical form. With PrimaLoft(R) Evolve Active insulation lining the torso and Pertex(R) Quantum Air overlays across the upper body, this hoody blocks wind where we need it most while allowing airflow to regulate heat on the move. Soft Thermic(TM) G fleece throughout keeps us warm in cold conditions, while the gridded backer enhances moisture management. Add in an under-helmet hood, thumb loops, and a streamlined fit, and this hoody is dialed for mixed climbing, mountaineering, or ski mountaineering when the weather won't hold still.