Everlane ReNew Transit Backpack

Exhibit 1: Excellent commuter AND travel backpack - it has the strap on the back so you can stow it on top of your carryon suitcase. External AND internal water bottle/umbrella pocket. I have had mine for metro commutes since 2021 RTO and it has held up great. Actually just bought a second for when SHEIN ultimately destroys Everlane.