Hand made in the USA of soft yet durable Eco-fi felt material that forms to curves and resists wrinkling over hardening nipples. Just peel and stick on clean, dry skin! All Pastease feature latex free, medical grade, waterproof adhesive that stay securely in place for as long as you like and until they are gently removed. Dimensions 2.5 inches by 2.8 inches. Coverage diameter 1.7 inches. From Pastease Brands.