A Boston Marathon® sling bag with adjustable strap.

When you don't have a ton to bring along but want to keep the essentials close, head out with this sling over your shoulder. Made from lightweight yet durable polyester, it includes a crossbody strap that adjusts up to 60 inches in length. There's a pocket on the strap to keep your phone handy, plus multiple zip pockets on the bag to stash stuff.