I love these kimono style onsies because you don't have to pull over babys head= easy to change, happier baby, quicker removal. Because they open up it makes getting arms into sleeves much easier as well.

Also sooooo much easier to put on or pull off poopy or vomity baby.  My husband and i can undress and redress her while she is upright especially important when she just vomited to prevent further vomiting.  I wish caters made these in short sleeve onsies.  I already have ordered more in pretty much every style and multiple sizes.  Plan to return all long sleeves normally onsies and exchange for these because these are so much more convenient for parents.