Built for high-output winter activities, the R1® Air Beanie provides just the right amount of warmth while you’re working hard. Made from Patagonia's most breathable fleece, this performance beanie has a snug fit and can be worn under a helmet.Features100% recycled polyester jacquard fleece with hollow-core yarns features a unique zigzag texture that wicks moisture, dries fast and is highly breathable for high-output activitiesLow-profile shape fits under a helmet without interference Patagonia R1 Air Beanie - Phosphorus Green