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: 2.6 inches X 2.1 inches. Coverage Diameter: 2.1 inches. From Pastease.