Kestrel Materials, Inc. specializes in manufacturing innovative textiles that adapt to temperature changes, enhancing comfort and functionality in clothing. Founded in 2017 and headquartered in San Francisco, California, the company develops unique fabrics made from nylon, polyester, and polyolefin fibers, which are engineered to expand and create air pockets in cold environments. This technology not only traps heat to keep users warm but also collapses in warmer conditions to promote cooling. Kestrel has secured a letter of intent with Casper for the use of its materials in bedding, indicating a growing interest in its temperature-reactive technology. As consumers increasingly invest in high-performance outerwear and athletic apparel, Kestrel Materials is poised to make significant advancements in textile science.