floating' backpack bounces up-and-down to reduce stress on your back
HoverGlide: World's First Floating Backpack | Indiegogo
Amazon.com: Hover Glide Backpack
Hoverglide Sliding Backpack - YouTube
HoverGlide 'Floating' Backpack Looks as Bizarre as It Sounds | GearJunkie
Hoverglide Weightless Backpack: A Backpack That Bounces Up And Down | Moving Backpack | Backpack With Suspension System | First Responder Backpack | Lightning Backpack - Plugined
HoverGlide "Floating" Backpack Might Make Carrying Your Gear A Little Easier
The Physics Behind Lightning Packs' Radical HoverGlide - Outside Online
HoverGlide "floating" backpacks use rails and pulleys to lighten the load