The round lightweight shield faces away from the sensitive and delicate skin around the baby's mouth to ensure minimum contact with the baby's nose and mouth, which means less chance of moisture build-up from saliva that can cause rashes and sore spots. Round nipple Available in natural rubber latex Designed to support natural breastfeeding The shield is made of 100% safe food-grade material Available in size 0-6 months and 6-18 months Natural rubber latex Natural Rubber latex is a natural material made from a sticky milky fluid tapped from the Hevea tree. The fluid is refined to the brown/yellow rubber you know from your pacifiers; a super soft, elastic, and resilient material very much resembling the mother’s soft nipple. The natural material comes with a natural aging process affected by natural influences like UV light, air, saliva, and heat. The elasticity of the material allows the nipple to change shape and size because of the baby’s strong vacuum, this means that the nipple in some cases can expand if it is not replaced in time. Natural rubber latex pacifiers should be scalded rather than boiled and replaced every 4-6 weeks for safety and hygienic reasons.Since latex is a natural material color variation may occur.