Offered in both glass and plastic, these two-piece Baby Brezza bottles ($25) have a breast-like nipple and a wide-mouth design that mimics natural breastfeeding, providing optimal oral development for baby and a more seamless transition from breast to bottle. Bonus for mom: with only two parts, they're easier to clean, fill, and hold, and the sleek design eliminates hard to reach crevices where germs and bacteria can grow.