the.com/backpack
the only thing that makes carrying your entire life feel like freedom
ancient gearOtzi the Iceman carried one 5,300 years ago
word originAmerican slang from the 1900s, German roots
weight ruleShould stay under 20% of body weight
space testedNASA's jetpack version costs millions per unit
two strapsHalve spinal load versus a single shoulder bag