100% Certified organic cotton. Hypoallergenic, chlorine free. No chemicals, rayon or synthetic materials used. Maxim organic products are made for health and environmentally conscious individuals. The cotton used in this product is 100% certified organic and chlorine and viscose free to reduce the risk of irritation, allergy, and other related issues. Why organic? Organic cotton is pesticide free. The cotton produced on industrial non-organic farms is liable for utilizing 25% of the pesticides exposed in our world. Pesticides are not only harmful to the environment, but they can be harmful to the body.