osprey daylite black o/s Plus Commuter Backpack – Lightweight, Everyday Pack with Laptop Sleeve and Water Bottle Pockets – Ideal for Work, School, and Travel with Versatile Storage Options, : Sports & Outdoors that can be used for hydration or carrying an umbrella in the city Osprey - Daylite Duffel 45

And to get a hydration port in a larger model (not the Gila) you have to order a custom pack

Plus, ultra-runners can aim to refill at aid stations, or pre-planned supply stops (or just loop back for home/the parking lot, reload, and head out again)

Additional Features and Accessories Its the features and accessories of your ultralight daypack that can make or break your experience

Many travelers drop a document sleeve or pouch inside the main cavity

Dont cook near your tent

An AirScape backsystem and BioStretch harness help the pack to move with you, which is crucial when loading a pack with (relatively heavier) overnight gear, and two torso sizing options means that you can find the perfect fit