I get the concept of these cups, but I highly doubt my 4 month old would. These cups were designed as a cup on a slant which prevents spills and allows drinking without having to tilt the head backwards or forwards. Also, the design helps with putting the cup down easily, which is always hard for little ones. (via Baby Gadget)

I think it's interesting! These are cups that my baby would love to sip from and toss around afterwards. Might try it!