A lot has changed over the course of COVID-19 with remote, hybrid and in-person learning, but backpacks are here to stay. They’re customizable, come in all shapes, sizes and colors and are the ultimate in self-expression. But—when not worn properly, they can cause short- or long-term problems in kids’ muscles, joints and—well—back.So what’s the right way to wear and carry a backpack? What else should you know so we can keep our learners in good physical health? Dr. Phil Mack, orthopedic surgeon with Connecticut Children’s, has answers.