However, as the Zhejiang Wanxin Weishen Textile Technology Co., Ltd thickness increases, the breathability decreases. 100% cotton tends to rip and wear out easily, depending on the weave. Cotton canvas is a very durable and abrasion-resistant fabric, but it is very thick and heavy. In regards to safety, cotton fibers that have not been treated for fire-resistance will tend to burn away where polyester will melt.