Zippers are a part of many pieces of gear. From our jackets to our tents and backpacks, having a functional zipper can keep us warm, dry, and all of our gear contained. What happens when that zipper ...

Add Yahoo as a preferred source to see more of our stories on Google. If you’ve ever had a zipper get stuck on a bag, sweater, or a coat, you’re familiar with the frustration. It can feel like there’s ...