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Using our versatile and powerful Merino Sport yarn, the Women’s Intraknit Merino 200 Pattern 1/4 Zip is ready to help you reach your finish line – wherever and whatever that may be. This Smartwool base layer is 3D-mapped for a near-custom fit and freedom of movement, while ribbed elbows provide extra flex room. New technology allows us to seamlessly knit mesh ventilation in gender-specific zones designed to help keep your body dry and warm as you zip up and venture out in comfort.