This storage box is made with strong, durable plastic.I like the tight-fitting latches, two on each side and one on each end. They make a tight fit, locking moisture out. This is great because I live in a humid environment. We have constant battles with mold. I know my collectibles are going to be safe, along with photos I can't replace. I'm also placing important papers in there. In case of a hurricane evacuation, I can grab and go! It's clear enough so I know what's exactly in there.