Benji sheets are made from a high performance, microfiber. Designed to be extremely soft and keep hot sleepers cool, and cool sleepers cozy! Microfiber is not calculated using thread count, but rather GSM (grams per square meter) and are equal to approximately 1500 threads per square inch!. All Benji products are made with the environment and our customers safety in mind using TPG formulated dyes and washing techniques that match or exceed global standards for Sustainable Manufacturing Processes.