The ProStore range of plastic boxes is made from durable and fully recyclable polypropylene. You can rely on the strength of our boxes as they are designed with a double bottom and reinforced sides. The clip-locking latches hold the lid firmly in place and keep your contents dust and moisture-free. Can be used to organize your office, home, garage, or workspace. All ProStore storage boxes are non-toxic because they are BPA-free (Bisphenol), compliant with European food safety standards.