Collar & Transparent Cover Converts Storage Container To Feeding Bottle. Upgrade Your Feeding Routine with Our Versatile Bottle Accessories. Designed for Maternity Needs, These Accessories Seamlessly Transform a Storage Container into a Feeding Bottle with Ease. Made from Safe Materials Like Silicone and PP, They Are Free from Harmful Chemicals Such As Latex, Nitrosamine, Phthalates, BPA, and PVC. Enjoy the Flexibility of Choosing from Four Collar Colors—pink, Green, Gray, and White. Each Collar Pairs Perfectly with the Transparent Cover, Allowing You to Select the Right Combination for Your Needs. The Easy-to-use Design Includes a Built-in Anti-colic Air Vent in the Teat, Which Aligns Perfectly with the Corresponding Collar. Conversion is Simple: Just Assemble Your Chosen Teat with the Collar, and You're Ready to Go. Whether You're Looking for a Standard-sized Mouth or an Easy-to-handle Design, These Accessories Are Perfect for Making Bottle Feeding Straightforward and Convenient. Features: - Material: Silicone, PP (Latex Free, Nitrosamine Free, Phthalate Free, BPA Free, PVC Free) - Colors: Transparent Cover with Pink, Green, Gray, White Collar Options - Design: Adjustable Components to Convert Storage Containers to Feeding Bottles - Easy Assembly: Anti-colic Air Vent Alignment for Seamless Feeding - Measurements: Cap - Height 4.5cm, Collar - Max. Diameter 7cm - Weight: Collar 20g, Cover 15g - Package Includes: 1 Piece Cover or 1 Piece Collar (Pink/Green/Gray/White).