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Helmet for kids - Coggle Diagram
Helmet for kids
bicycle helmet
the form of this helmet is suitable for kid
the foam shell outside could decrease the energy when collision
the material is easy to find and it has low cost
half helmet
Structure
It reached our standard:
easy to find materials and make
the material is cheap
it still reduces the force when collision
it have the 2 layers
the plastic shell outside and foam inside
Use the different methods
Design with the colorful image or insert the cartoon characters :
Use the half sphere shape
Use the low price material like: cardboard, foam, glue, silver drags.
It should have a low mass
