i love the playtex drop-ins baby bottles.  these bottles are very convenient.  they are very easy to wash.  they are very easy to use.  if you are out some where that you cant wash out a bottle thats where these bottles com in handy.  all you gotta do is toss out the liner and put in a new one and instantly you have a clean bottle thats ready to be used.  by using these bottles the liners colapse so the baby doent get any air in the bottle.  i have two kids and both of them used these bottles.  my kids were less gassy and less fussy.  these bottles do help reduce colic.  if the baby leaves...