For endurance races such as the TransAlp or even your local 24 hour, you'll have a crew to keep you hydrated and fed. To that end, all you need to carry are a few tools and enough drink to get you from feed zone to feed zone. The Evoc CC 3L Plus 2L Hydration Pack is light for speed, with enough volume to keep you hydrated. This pack is essentially the smaller sibling of the CC 6L. In fact, it holds exactly half the amount of gear in a single side zip pocket located on the front of the pack. If you need to stash a light layer, adjustable elastic straps secure it to the outside of the pack for easy access. The pack also comes with a 2 liter bladder. If you tend to drink more, or the feed zones are a bit farther apart, the CC 3L expands to hold the 3 liter Evoc bladder. Each bladder is designed with a full slide top for fast and easy filling. The Evoc CC 3L Plus 2L Bladder Hydration Pack is available in one size and comes in the colors Black and Sky.