Dupont cotton. Premiumfabric is DuPont cotton fabric, DuPont cotton, called Thermolite. Is the market collectively known as hollow cotton. Produced by DuPont and Taiwan Province Xinli Company. It has been popularized in the market for 40-50 years, and its warm-keeping effect has also been affirmed by the market. Dupont Company of the United States has transferred the trademark management right to Invista Company, and DuPont cotton is jointly produced by Invista Company and Sony Company.