DJ's Boardshop via Amazon offers the Oakley 15-liter Snowmad Day Backpack for $41.95 with free shipping. That's $28 off list and the lowest total price we could find. It features diagonal ski carry and vertical snowboard carry slots, insulated cooler pockets, safety whistle, and a padded back panel.

A close price: The House offers it for $34.95 plus $7.95 for shipping.