From Wired.com
What is rotational impact? When do you have to replace your helmet? Here’s what to look for when shopping for a bike helmet.
ONE OF THE best parts of owning a bicycle is shopping for all the gear and accessories that you need to go along with it, from bike lights to stay visible on the streets to bike locks to keep it safe when you’re at the shop. But no piece of equipment is more important than a bike helmet.
But does buying a more expensive helmet mean you get more protection? What features do you need for what you intend to do, and how often do you have to replace it? And what the heck does MIPS mean? Let me walk you through the jargon and help you make sure your brain stays safe in your skull.