5.9 oz.; Body: TK08 Repreve 90% Polyester, 10% Spandex; Sleeves: 75% Polyester, 25% Spandex;Asymmetrical snap up collar; Side-slit pockets; Diamond quilted material; Relaxed pullover fit; GreenStory Partnership to calculate lifecycle emissions of each of our products; Supporter of carbon reduction and removal projects in reforestation and renewable energy adaptation; Swannies uses Vela bags which are made from responsible practices and are curbside recyclable; Swannies used EcoEnclose recycled and reusable materials for packaging to reduce our waste and carbon footprint;