Wrap certified. Fabric: Shell: 100% Nylon, 1.18 oz/yd2 (USA), 40gsm (CDN). Shell-secondary: 97% Polyester, 3% Spandex. Interwovo Spandex fleece, 6.87 oz/yd2 (USA), 233gsm (CDN): Lining:100% Nylon. Weight (GSM): 233gsm.