Waterproof is the most important function for Active Intelligence’s enthusiast and water resistant zipper is the essential part. All the zippers are tested and bearable for 7kg weight loading. No damage with 500 times usage test. And safely pull with 25kg power from both sides with 10cm long zipper. Focus on craftsmanship, design and durability, Active Intelligence pursues perfection to every detail. Each product has undergone the most strict quality tests. Beyond the standard is our core to make each product an unparalleled work.