Vintage Patagonia 1/2 Zip R1 Regulator Polartec Pullover - Green - Men's Size Medium Patagonia's R1® Pullover maintains a similar focus, with a durable, finely tuned high/low interior grid polyester fabric that warms, stretches, moves moisture and insulates. Condition: Excellent, preowned vintage condition. Materials: 42% polyester 43% nylon 15% spandex Approx Measurements (laying flat): Pit-to-pit: ~21.5in Shoulder to bottom hem: ~25in