Designed For You: This Medium Flow Teat Is A Feeding Solution Created By Medela For Babies Between 0-3 Months. For Those Wishing To Feed Their Babies Expressed Breastmilk. Easy To Clean: The Medela Spare Teats Are Both Dishwasher And Microwave Safe. You Can Safely Sterilise Them In Steam, Cold Water Or With Medela Quick Clean Microwave Bags Suitable & Adaptable: Created To Fit The Range Of Medela Breastmilk Bottles, Giving The Ability To Adapt And Suit The Age As Well As Needs Of Your Growing Baby Safety: Made From Durable Silicone Which Is Odourless, Tasteless And Bpa Free