When the temperature drops but the trail keeps calling, the Patagonia R1 Air Jacket delivers the perfect balance of warmth and breathability for your mountain adventures. This technical fleece mid-layer features innovative hollow-core yarn construction that wicks moisture away from your skin while maintaining excellent insulation, making it ideal for cool-weather hiking and backpacking when you're working up a sweat on the ascent. The slim-fit design layers seamlessly under your shell, while the off-shoulder seams eliminate pressure points from pack straps during long days on the trail. With its zigzag-knit pattern enhancing airflow and full-zip construction allowing instant temperature control, this sustainable fleece jacket (made from 100% recycled polyester) adapts to changing conditions whether you're grinding up a steep switchback or taking a windswept summit break. It's the go-to choice for mountain athletes who demand reliable performance without compromising their environmental values.
