A ZipString is an incredible device that rapidly propels, a loop of string. When the strings momentum is balanced within the forces of gravity, lift, and drag, the string actually flies.
The momentum of the string is derived from its speed and its mass. Optimal strings are moving fast, and the string is made light fibers.Any movement that a Zipster (a user of a ZipString) does, the string follows.
Characteristics:
- 3 String loops of different sizes and colors.
- USB charging cable
- Instruction guide
- QR code to trick library
Age: 6 years and up
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