Poly Cotton-Twill Weave Sheet Set (Pick Color and Sizes)If you like the warmth of flannel but wished it could withstand more wash cycles, while also being more durable then Twill is for you! Our Poly Cotton Twill products are made with a very strong Twill Weave. Poly Cotton Twill is our most durable fabric while also being soft. Once washed and dried a few times, the true coziness of these products emerges. They are the heaviest in weight of all our fabrics, which adds comfort and coziness to every client.