Sippy cup
Appearance
The sippy cup (American English) or beaker (British English) is a drinking cup designed for toddlers which prevents or reduces spills. Some sippy cups work by way of surface tension that prevents liquid from being spilled even when the cup is upended.[citation needed] The critical element is the sippy top being firmly in place on top of the cup, preventing spills.
The Sipster spill-proof sippy cup was invented by Richard Belanger, who licensed the design to Playtex.[1]
See also
References
Wikimedia Commons has media related to Sippy cups.