Louis Garneau's Tri-Pack Revo may be the ultimate transition bag! Multiple pockets let you organize your equipment for each leg of the race and the zippered pocket on the bottom of the pack is water resistant, too. Handy features include a strap to hang the Tri-Pack on the transition rack, a water bottle pocket, and an inner organizer. An expandable mesh outside pocket is perfect for your helmet and the cushioned and ventilated back is comfortable even when the pack is full. Plus, Garneau even includes a foldable chair so you'll always have a place to get ready.