Has anyone tried front packs/hip bag with 2L of water to save weight in your backpack and better weight distribution? : r/Ultralight
Wildkin Kids School Backpack for Boys, Features Front strap for attaching Wildkin's Clip-in Lunchbox or other gear, Generously sized exterior front pocket (Monster Green) - Walmart.com
Amazon.com : WindyTails Dog Backpack Carrier for Medium Small Large Dogs, Pet Backpack Carrier, Dog Front Carrier Pack, Dog Hiking Backpack, Dog Baby Carrier, Dog Chest Carrier for Hiking Outdoor, Black, M :
Daniel Rowland: Multi-stage race backpacks (part 3)