What Our Gearhead(R) Experts Are Saying:"The R1 Thermal Full-Zip Hoodie is perfect for cold-weather alpine missions. The microgrid fleece lining keeps me warm while staying breathable, and the durable outer fabric sheds light wind and snow. The stretchy design means I can move freely, and the under-helmet hood is a game-changer for layering up."For alpine climbers and adventurers tackling the coldest objectives, the Patagonia R1 Thermal Full-Zip Hoodie is an essential companion. Crafted with an ultra-stretchy 91% recycled polyester Technostretch fabric, it provides breathable warmth and freedom of movement when scaling peaks or navigating technical terrain. The interior microgrid backing wicks moisture and traps warmth, keeping us comfortable on the move, while the smooth outer face resists wind and sheds snow flurries when the weather takes a turn. Thoughtful features like the under-helmet hood, offset shoulder seams for comfort under pack straps, and discreet thumb holes make this hoodie an unbeatable layer for high-exertion mountain activities.