Sometimes you need to carry a little extra along with you, and that's when Thule's Pack n' Pedal Trunk Bag comes into play. Waterproof material, welded seams, and a roll-top closure mean that your gear will arrive at your destination safe and dry. And, the convenience of hook-and-loop fasteners on the bottom of the bag let you install and remove it from your bike rack in seconds. It can be used on its own, or slid between a pair of rear panniers (sold separately) for more cargo space on your next tour. For low-light riding conditions Thule included a light pocket and visibility-enhancing reflective accents.