Silicone baby bottle
Nanobébé Flexy Silicone Baby Bottle 9oz
The bottle to buy first if you are combination-feeding and want something that feels less like a hard plastic cylinder. The whole body is squeezable medical-grade silicone, the nipple is triple-vented to cut air intake, and the wide base makes it hard to knock over at 3 a.m. It is $18.99 for one, which is not cheap per bottle, and silicone picks up lint in a diaper bag.