Have you seen the D3o beanies?
IGNITEBEANIES
It's a silicon like soft rubber that becomes rigid when subjected to impact. The ignite beanies have d3o sections built in. Was looking at these in place of a helmet for snowboarding but they sold out last year.
It's never going to give the protection of a helmet but better than nothing and looks good too...
d3o gives more details of the material used.
On the other hand these don't look too bad
Paris cover - YAKKAY - brainwear for smart people
I also like the Bern helmets CycleChic: Bern Watt Hard Hat
Or the recon helmets look ok Evans Cycles | TSG Recon Helmet | Online Bike Shop
IGNITEBEANIES
It's a silicon like soft rubber that becomes rigid when subjected to impact. The ignite beanies have d3o sections built in. Was looking at these in place of a helmet for snowboarding but they sold out last year.
It's never going to give the protection of a helmet but better than nothing and looks good too...
d3o gives more details of the material used.
On the other hand these don't look too bad
Paris cover - YAKKAY - brainwear for smart people
I also like the Bern helmets CycleChic: Bern Watt Hard Hat
Or the recon helmets look ok Evans Cycles | TSG Recon Helmet | Online Bike Shop