Donut Pastease are hand-made in the USA of soft yet durable Eco-fi 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: 3 inches.Coverage Diameter: 3 inches. From Pastease.