Craft Size Chart The Greatness String is a thin and lightweight thong made of highly functional fabrics that keep you cool and dry during intense workouts in warm conditions. Its ergonomic 3D design provides a perfect fit and optimal freedom of movement. By wearing functional (instead of cotton) underwear closest to your skin you help regulate your body temperature and thus improve your performance. Features: - Efficient moisture transport - Thin and lightweight fabric - Ergonomic fit - Fabric 1: 88% Polyester 12% Elastane, Fabric 2: 95% Polyester 5% Elastane