The Thule UpTake 8L Hydration Pack is a day pack for hydration on the trails. Whether biking or hiking, the 2.5L HydraPak Reservoir delivers delicious sips of water via the hose, and when the sip is done, the ReTrakt magnetic hose slips back into place and out of the way. The 8L of space makes it easy to store tools, first aid, snacks, and layers for the adventure ahead.