Pure Active Mountain Layering
Stay lightweight, dry, and comfortable during high-effort cold-weather pursuits with the Patagonia Men’s R1 Air Fleece Jacket! Crafted with hollow core yarns woven into a unique zigzag pattern, this technical fleece traps warmth while actively dumping excess heat and moisture as you move. Its smooth, pack-friendly shoulder seams eliminate chafing under straps, and a full front zip lets you quickly adjust ventilation on steep climbs. Throw it on for cool trail runs, alpine ascents, or as a cozy mid-layer under a hard shell when winter weather sets in.
