A bicycle helmet is often dubbed as the most annoying part to store or carry when leaving the bicycle. It won’t fit in most sling bags. Even if it does, you might find its concave shape means wasting valuable space that unfortunately cannot be used.

FEND One is a bicycle helmet that can tackle the problem. It looks like a regular helmet at glance, but the left and right sides of the helmet can move inward — making the overall footprint of the helmet much smaller.

The result is a helmet that is compact and possible to fit inside a regular carrying bag. How amazing is that?