This is pretty cool. Good for those wanting to save space:
Is cycling your main form of transportation? If it is, then you have probably experienced the issue that the Stashkit folding helmet is meant to address, what to do with that bulky helmet once you get to your destination?
Rather than dangle the helmet from your bag or backpack as seems to be the most common option, the Stashkit helmet folds into a flattened U shape in order to make it more packable. The Stashkit helmet conforms to European CEN safety standards but there is no mention of CPSC, Snell or ASTM certification which are the ones that enable the sale of helmets here.