Bike helmets are crucial for keeping your skull safe, but face it — they make you look like a total dweeb. Danish lidmaker Yakkay has developed an innovative system that protects your head and your ego. The adjustable helmet comes with a series of inserts for a close fit that still lets cooling breezes through. But the real draw is the fabric overlay that transforms the usual dorky dome into a fetching hat. There are four styles, ranging from glamorista to Gilligan. A stainless-steel buckle adds some urban edge.