F2C 2 Person Free Standing Double Size Hammock Quilted Fabric With Pillow Spreader Bar and Steel Stand Included for Easy Set Up(red hammock with stand) Cotton is comfy and breathable, but isn't very weather-resistant. Cotton should not be left outside in bad weather. Polyester hammocks are more durable and weather-resistant. They can often be equally as comfortable as cotton options. Canvas hammocks are the most durable fabric option. Look for fade- and weather-resistant fabrics, such as Sunbrella, so that your fabric hammock maintains its color. For additional comfort, opt for a quilted hammock, which has a plush center layer of batting.