Ideal for commuters, the FEND One Foldable Bike Helmet folds to a compact size. Available in black, white, and yellow, you'll love that you can make this bicycle helmet half its size. In fact, when you bend this folding helmet in half, it takes up just 60% of its original size, making it easy to fit in your messenger bag. Don't worry, all of this bending and folding doesn't affect the integrity of the FEND One. What's more, it exceeds safety standards set by the US CPSC and European EN1078 for bicycles under 20 mph. Choose from small or medium/large sizes, and then further conform it to your head with the precision dial system. As this helmet weighs just 400 grams, it's both comfortable to wear on your head and easy to tote around when you're not riding.