About This CONVENIENT : Ready-to-use liners save time by reducing the need for washing and sterilizing bottles. TRAVEL FRIENDLY : Lightweight and portable design makes feeding easy anytime. COMPATIBLE: Designed to fit most wide-neck bottles (up to 2") and can also be used with standard bottles when secured tightly (please make sure it’s properly fastened to prevent leaks). DISPOSABLE : Simply use once and discard; provides a fresh, clean bottle at every feed. ANTI-COLIC : Helps reduce air intake for more comfortable feeding and less colic. BPA-FREE : Made with safe, BPA free materials for your baby's health and safety. MEASUREMENT & TEMPERATURE INDICATION : Clear marks and color change feature for accurate points and safe temperature. Overview Brand : MOTHER-K Color : Clear Material Type Free : BPA Free Item Weight : 6.4 ounces Bottle Nipple Type : Vented