Bulletproof bags can’t save my son

Both of my children need new backpacks before school starts this fall. My daughter, who is starting the fifth grade, is due for a new Harry Potter bag. Only one of the zippers still works on her old one, and given how many books she likes to shove in there every morning, it's a wonder it hasn't disintegrated entirely. My son, who is heading into seventh grade, has only one working strap on his Avengers bag, and we've had to break out his Captain America replacement early. As the two of them embark on a new school year, I wish their need for new backpacks remains the biggest problem they face.