Ever had trouble trying to make a bicycle helmet fit your old noggin? It normally involves buying a size too big and then using heaps of foam padding to make it fit “comfortably”. The foldable helmet from Carrera uses an accordion type mechanism to ensure a much better fit without having to muck about with too much padding. In addition it means that you can compress the helmet when you’re not wearing it, making it easier to store or travel with. There’s no details on pricing or availability yet, but it certainly looks interesting.