T-Shirts by Gildan. Details:This Adult Heavy Cotton T-shirt is Gildan’s best seller for a reason—wearers love the weight and versatility of the fabric, and there are companion styles for women, youth and toddlers. Made of U.S.-grown cotton, this midweight takes you through every season of the year. Its smooth surface is ideal for screen printing, embroidery, iron-on transfers, bleaching and tie dye. A fantastic choice when you want to coordinate looks for the entire family!