Bell Bottoms with Elastic Waist - True to size. Not oversized. Refer to Garment Sizing Chart below. All Evolution fabrics are made of Antron Crinkled Nylon. The fabric undergoes a 2-step jet-dye process utilizing the highest standards and specifications. The result is a great look that is cool and comfortable while also providing protection from hair and fluids. From Lange you get a high quality fabric with "more stitches per inch". The best material, top quality construction and heavy duty zippers mean your professional wardrobe will stand the test of time.