Patagonia Ultralight Black Hole Mini Hip Pack 1L

Crowds are where phones and wallets go missing, and a small pack worn on your front keeps them where you can feel them. This one holds a liter, enough for a phone, cards, keys and those earplugs, and its zippered front security pocket is the place for the things you really cannot lose. Wear the webbing belt around your waist or across your body under a poncho. At about 100 g it weighs less than a phone, and the coated ripstop nylon shrugs off showers, though it is weather-resistant rather than waterproof, so bag your phone in a downpour. When you do not need it, it stuffs into its own pocket.