GOTS Certified Organic Stretch Sports Bra. Unpadded, double-layered support made for low impact activity. 92% Organic Cotton and only 8% Spandex. If you are between cup sizes or prefer some room in your band, the brand recommends sizing up. Measurements - XS: Up to DDD Cup, Band Size 30"-32" - S: Up to DDD Cup, Band Size 32"- 34" - M: Up to F Cup, Band Size 34"- 36" - L: Up to F Cup, Band Size 36"- 38" - XL: Up to G Cup, Band Size 38"- 40" - 1X: Up to H Cup, Band Size 40"- 42" - 2X: Up to H Cup, Band Size 42"- 46" - 3X: Up to H Cup, Band Size 46"- 50"