Made with 75% organically grown cotton. Organic cotton is better for people and the environment because it's grown without the use of harmful synthetic pesticides and fertilizers. Ribbing at top. Reinforced toe and heel. This product was made in a factory that invests in gender equality and women’s empowerment. Through RISE (Reimagining Industry to Support Equality) and Gap Inc. ’s program P. A. C. E. (Personal Advancement & Career Enhancement), we support people who make our clothes to build the skills, knowledge, confidence, and resilience needed to advance in work and life. .Learn more.here. Coton 100%