The perfect bottle didn't exist. Until now. Meet the Bond Silicone-Coated Glass Bottle from Munchkin, which has it all: safety, comfort, and innovation, for a smoother feeding journey. You get the purity and durability of silicone-bonded borosilicate glass, plus a best-in-class, all-silicone, anti-colic valve system. The soft-touch outer layer makes life easier with a comfortable grip and no separate sleeves to clean. An advanced anti-colic valve system helps control flow, reducing colic, gas, and unnecessary discomfort during feeds. Each bottle features a food-grade silicone nipple that's specially designed to mimic natural feeding, for a seamless transition from breast to bottle and back again. Worry less. Nurture your bond more.