As I mentioned earlier this year, I was given a Nutcase helmet for my birthday. Now I've had the opportunity to use it for several hours in both cool and rather warm conditions, it deserves some praise.
I love it.
Helmets are vile and enable you to look totally naff whilst wearing nice clothes when cycling. But in defence of the Nutcase it's less naff than most and it is comfortable. In all honesty once I'd had it on for a bit the first time I rode it, I forgot I was wearing it. It's a superb fit.
Given that all the riding I've done so far has been in spring, and this spring in Sydney has been cooler than average, the air vents have provided sufficient cooling. Go fast enough and the air just whizzes into them. Once I've had some summer rides I'll revisit that topic and see how it stacks up against a more open helmet.
I had concerns about the lack of sunvisor and still do to a degree; I've found myself squinting even with sunnies on, but the comfort of the fit makes up for it.
I wouldn't hesitate to recommend Nutcase helmets to cyclists who don't want to look like an alien has landed on their head. Until cycling laws change (ha!) and we can go back to riding around parks and quiet streets without bloody helmets should we wish to do so, Nutcase is my choice.