You don't know you need it. Until you don't want to live without it. This side bag is the humble sidekick that can make a big difference to your day. Don't leave behind your pen, charger, gum or lip balm, just because you can't keep track of your essentials. And don't rummage around your bag looking for them, either.

This sling is the place to keep them in one place (and in the right place).