The Everfun Hydration Backpack features a built-in water bladder, multiple storage, and durable design, for cycling, hiking, ...

Hydration compatibility is another plus ... slices through the air without pulling you around like some backpacks do in strong winds. The Mach 5 zips open from the front to retain the no-drag profile ...

Keegan Swenson and htSQD have a new Velocio Hydration Pack to show off this season, and it could be a big hit in the gravel endurance crowd ...