A high-performance technical fleece engineered for high-exertion activities in cool conditions, specifically designed to balance thermal retention with extreme breathability.
The Patagonia Men's R1 Air Zip-Neck is a specialised mid-layer designed for athletes who generate significant body heat. It is constructed from a 5.7-oz 100% recycled polyester jacquard fleece featuring unique hollow-core yarns. The distinctive zigzag-knit texture is the core of its technical performance; the raised ribs trap warm air to maintain core temperature, while the "valleys" between the ribs allow moisture and excess heat to escape rapidly. This "air-permeable" design makes it one of the fastest-drying technical tops available, though it offers minimal wind resistance, meaning it performs best when paired with a shell in gusty conditions.
Key Technical Features
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Hollow-Core Yarn Technology: Utilises hollow fibres that provide a high warmth-to-weight ratio while significantly improving moisture-wicking capabilities.
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Zigzag Jacquard Knit: Engineered to facilitate maximum airflow and rapid evaporation, preventing that "clammy" feeling during intense movement.
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Offset Shoulder Seams: Designed with seams shifted off the top of the shoulder to eliminate pressure points and chafing under backpack straps.
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Zippered Chest Pocket: A low-profile, left-chest pocket provides secure storage for small essentials like a compass, lip balm, or snacks.
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Slim Fit & High Stretch: Cut close to the body to ensure the fabric remains in contact with the skin for optimal wicking, while maintaining full range of motion.
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Quick-Drying Bindings: The cuffs and back hem are finished with a woven binding that provides a secure fit and dries as quickly as the main body fabric.
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Deep Venting Zip: Features a quarter-zip neck that allows for immediate manual temperature regulation when ascending steep terrain.
Technical Specifications
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Weight: Approximately 289 grams.
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Fabric: 5.7-oz 100% recycled polyester jacquard fleece with hollow-core yarns.
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Sustainability: Fabric is bluesign® approved and the garment is Fair Trade Certified™ sewn.
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Fit: Slim Fit (intended as a technical base or mid-layer).
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Treatment: Features HeiQ® Pure odour control to keep the garment fresh during multi-day trips.
Best For
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High-Output Alpine Sports: Ideal for ski touring, winter trail running, or fast-packing where moisture management is critical.
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Active Layering: Works exceptionally well under a windshirt or waterproof shell, acting as a "pump" to move sweat away from the body.
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Weight-Conscious Travel: Its high compressibility and low weight make it an excellent choice for hikers looking to minimise pack volume.
