The Prohab Helmet Society is a non-profit dedicated to providing helmets by donation to active individuals who wouldn’t normally use them. Vancouver, being one of the friendliest cycling cities in North America, has a high demand for helmets. To help fund their effort, Prohab put together a 2010 Ladies bike calender. Check out a preview after the jump…

Ms. December all dirty, working on a bike. If you’re into this, you can pick up a calender for about $26 USD shipped.