The Patagonia R1 Hybrid Vest Womens is a lightweight and easily packable vest designed to provide optimal core warmth during intense mountain activities. This vest, crafted from Polartec Power Grid fabrics, offers excellent stretch and breathability, enhanced by HeiQ Pure odor control. Produced in a Fair Trade Certified factory, it ensures ethical manufacturing practices. Lightweight and compact for easy packing Polartec Power Grid fabric offers durability, stretch, and breathability Hybrid design enhances warmth in key areas while allowing ventilation Slim fit with a low-bulk hem for seamless layering Fair Trade Certified production supports ethical labor practices Weight 162 g Size and Fit Fit: Slim fit Materials Body: 93% recycled polyester, 7% elastane grid fleece Side panels and back: 92% recycled polyester, 8% elastane jersey Both fabrics feature HeiQ Pure odor control and an anti-pilling finish Fabrics are bluesign approved