Sippy cup

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Sippy cup held by a child

The sippy cup is a spill-proof drinking cup designed for toddlers. It works 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 modern Sipster spill-proof sippy cup was invented by Richard Belanger, who licensed the design to Playtex.[1]

See also[edit]