Our new Anti-Mold Boot Bag was designed to protect your boots and prevent mold from developing on the leather. We started with a tough waterproof outer shell, added protective padding, and our anti-bacterial lining to eliminate odors. We then added rubber coated zippers and finally two 2"x2" desiccant canisters that are located in interior pockets. When the bag is zipped shut it creates a sealed environment and the desiccant canisters begin absorbing the moisture immediately. The canisters will last several weeks but when they are saturated they will change colors and you can recharge them by placing them in a microwave for 3 minutes. They can be recharged dozens of times.