Gently used. Goose down. Size 4-6. Would be best for a women’s small. This jacket is awesome and so warm. SPECS: LULULEMON DOWN FOR A RUN JACKET II Running in the cold and rain never felt so good. Made with 800-fill-power goose down and water-resistant fabric, this jacket will keep you feeling warm, dry, and comfortable. 800-fill-power goose down 800-fill-power goose down provides lightweight warmth featherlight insulation heat retention glyde Glyde fabric is wind-resistant and water-repellent wind-resistant water-repellent certified to the responsible down standard (rds) by control union We’re committed to mindful choices in our raw materials and responsible sourcing is important to us. 100% of our down product is RDS certified