Women ́s thongs. Iconic Calvin Klein organic cotton thongs. Medium rise waist Calvin Klein jacquard logo waistband Regular fit Material: 70% Organic cotton, 20% Recycled cotton, 10% Elastane. Washable. This product is made of certified organic cotton. It means that no harmful chemicals such as pesticides or insecticides are used for growing the cotton. This provides a safe work environment for the farmers, and the soil stays fertile for longer.