We didn't start using Playtex Dropins until our son was about 5 months old, but with baby #2 we will definitely use them from the start. There are three pieces - that's it! It doesn't sound like a big deal, but when you are sterilizing bottles and preparing bottles on minimal sleep, less is definitely more.

We take frequent day trips, and were delighted to find how nicely the Playtex Dropins pack. It is so easy, and much faster to warm the Dropins in hot water than conventional bottles because the water is against the liner, not thicker plastic or glass.

Buying the liners can seem like a waste,...