1. The latches lock securely, yet are easy to open. The reinforced stainless steel padlock is tamper-resistant and impossible to cut through. 2. Waterproof IP67. 3. Anti-impact, anti-pressure, corrosion-proof, high-temperature range. 4. Easy and safe to open during altitude and temperature changes with a pressure balance valve. 5. Ergonomic handle: comfortable, non-slip and wear-resistant handle with dual colors.