The soft fabric texture is elastane, the flexible structure has thin straps. There are 2 pieces of 100 cotton in this product. One-pieces with two thin straps are perfect for daily use. The natural fabric content offers a healthy and comfortable wearing comfort. The stitching does not bother you. Cotton is a natural fiber made from pure cellulose. Cellulose is created by synthesis in nature. It's an organic material, it has little flexibility. Care instructions. Wash at 30 degrees maximum. Do not tumble dry. Do not bleach.