HIGH-QUALITY MATERIALS: Our baby bottle caps are crafted from high-quality materials, guaranteeing durability and preventing leaks. Rest assured, your baby's milk or formula stays fresh and safe. AIR TRAVEL FRIENDLY: Ideal for air travel to counteract cabin pressure effects. EASY TO MAINTAIN: Reusable baby bottle travel caps are dishwasher-safe (top rack), suitable for electric sterilizers, microwave sterilizers, or boiling water. BPA-free for safety. LEAK-RESISTANT DESIGN: Seal rings ensure excellent sealing ability , preventing leaks even during prolonged inversion and strong shaking. VERSATILE USAGE: Perfect for storing bottles in the fridge and convenient for commuting or traveling. Keep your baby's bottles secure and leak-free with our high-quality, durable travel caps. Ideal for air travel, these pink, round caps ensure a perfect seal, preventing leaks even during inversion or strong shaking. Made from BPA-free polypropylene, they are safe, easy to clean, and compatible with Avent baby bottles. Perfect for storing bottles in the fridge, commuting, or traveling, these caps come in a pack of 8, ensuring you're always prepared. They are also dishwasher-safe, suitable for electric and microwave sterilizers, or boiling water.