Baby Brezza Two-Piece Natural Glass Baby Bottle Deterring colic isn't the only thing the Baby Brezza Two-Piece Natural Glass Baby Bottle ($16) has going for it. With only two parts, it's by far easier to clean than some of the other more complicated options. The wide, breast-shaped nipple lets babies feed comfortably, and the design means babies swallow milk, not air. Baby Brezza Two-Piece Natural Glass Baby Bottle $16 from amazon.com Buy Now