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©2026 Lucy Hui and respective copyright holders.

Munchkin Control Flow Open Training Cup


An extension of the Miracle® 360° line, a transitional drinking cup designed to teach toddlers the mechanics of open-cup drinking without immediately exposing them to unrestricted flow.

Further process available upon request.


Status
Launched 2026

Team
Design Director: Yvonne Chan
Lead Engineer: Daniel Ho
Engineering Director: Kevin Johnson
Final Development: Nick Trumbo
 Role
Lead Designer

Credits
Photography: Munchkin, Inc.

Control Flow Open Training Cup

About Miracle® 360°


Miracle® 360° uses a self-sealing, lip-activated valve that allows children to drink from anywher along the rim while helping prevent spills. 
 Each cup introduces greater independence in managing liquid flow, culminating in Control Flow’s transition to a traditional open cup. 
An internal silicone valve regulates flow, while an extended collar provides clearance between the valve and drinking rim. The valve can be removed to convert the vessel into a traditional open cup. 

Process


Through physical prototyping and functional testing, I tested flow-control mechanisms, cup proportions, and collar geometries to refine the drinking experience.

Miracle® 360° Refresh and Control Flow


The refreshed Miracle® 360° retains its lip-activated valve, while Control Flow introduces a removable valve for open-cup drinking. Both designs feature simplified assemblies for easy cleaning.

PA Consulting