Athletic and singlet soft fabric texture. Thick straps. This product contains 100 Cotton. It's a perfect product for daily use in your athletic singles. It's a product that you can comfortably wear under your clothes when you go to the gym. Moisture transfer is good and the stitching doesn't bother you. Cotton is a natural fiber Made of pure cellulose. Cellulose is an organic substance created by synthesis in nature. It's flexible and comfortable. Care Instructions. Hand wash at max. 30C. Do not tumble dry. Do not bleach.