Keeping Your Gear Dry with a BDM Zipper
If you've ever stepped into a drysuit, you've likely relied on a bdm zipper to be the literal line between staying warm and getting soaked. It's one of those pieces of hardware that most people don't think about until it starts acting up, but in the world of technical diving, sailing, and even high-end survival gear, it's a bit of a legend. These aren't your average jacket zippers that you can just yank up and down without a thought; they're heavy-duty, precision-engineered components designed to hold back the ocean and keep internal air pressure exactly where it needs to be. ...