No guarantees with any of the crowd funding stuff. You basically risk donating your cash against the kudos of being in at the beginning of something - or just purely because you think something is worth doing.
Crowd funding always entails a risk, but less so when you are buying a discounted future product than when you invest in, say, a software venture in exchange for shares that may never become worth anything. I only invest in the former and this one seems to be very credible. However, in my experience new products are rarely brought to market on time - there are usually a host of reasons for development delays. I'm not betting on getting one of these in April, but I think there's a good chance one will turn up some time next year.
Wasn't that long ago another folding helmet was being sold every where. It had quite a good retro look. This new one has more folds and looks quite neat, I'd have one if the price was right.