C.B.
Use PLAYTEX sippy cups they are more expensive, but worth it. I am using them with my 8 month old and they do not leak by any means. I put his milk in there when its snacktime, I put juice in there and everything and it does not leak. Good luck Christy with the playtex sippy cup. By the way, laying down with a drink does not hurt a thing and has not hurt my 4 sibblings or my two children. You do what you want and how you want, all mommies are different and all know what is best for THEIR child.