A gas barrier fabric is disclosed. The barrier fabric includes a fabric substrate. A heat-resistant coating layer disposed over a first side of the fabric substrate. A first gas barrier layer (also referred to herein as simply as a barrier layer) including a polymer is disposed over a second side of the fabric substrate. A second gas barrier layer is disposed over the first air barrier coating layer of the fabric substrate. The second barrier layer has a thickness of 5 nm to 1000 nm and includes aligned nanoplatelets.

The sheet material according to the present invention has a polymer elastic body and a fibrous base material comprising ultrafine fibers, wherein the average single fiber diameter of the ultrafine fibers is 0.1 m to 10.0 m, the polymer elastic body has a hydrophilic group and an N-acylurea bond and/or an isourea bond, and the following conditions are satisfied: the longitudinal stiffness, in accordance with method A (45 cantilever method) in the text of 8.21 Stiffness of JIS L 1096:2010 Testing Methods for Woven and Knitted Fabrics, is 40 mm to 140 mm; and after immersion for 24 hours in N,N-dimethylformamide, the following are obtained in wear testing using a pressing load of 12.0 kPa and 20,000 friction cycles in accordance with method E (Martindale method) in the text of 8.19 Wear Strength and Friction Discoloration of JIS L 1096:2010 Testing Methods for Woven and Knitted Fabrics: a grade of at least 4 and a wear loss of not more than 25 mg.