Description of SmartWool Synergy Jacket - Women's Smartwool's Base layers are like giving evolution a helping hand. A high performance base layer protects you from the elements while cradling your body in the finest natural SmartWool Features: Bonded stretch woven pocket on sleeve Zippered front hand pockets Draft flap SmartWool Synergy double knit (60% SmartWool, 40% nylon) Fabric weight: 320 gm/m2 = 9.4 oz/yd2 Garment weight: 440 gm = 15.5 oz