Inflatable helmet lets you carry it around conveniently when not in use - Yanko Design
Briefly

The Ventete aH-1 bicycle helmet is designed to be flattened and portable when not in use but with just a few pumps of air, it is inflated into an actual protective helmet.
The ribbed design of the helmet allows it to be folded like an accordion, making it compact for storage or carrying. It resembles a boomerang when deflated and a cosplayer's crown when inflated, giving it a unique look.
Read at Yanko Design - Modern Industrial Design News
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