1. Modified PP,Injection moulding. 2. Watertight,Anti-shock,portable,Crushproof. 3. Diced foam or EVA. Product Details for your reference: 1, Anti-shock, waterproof, airproof, dustproof, anti high or low temperature(degree Celsius : -30°C to 120°C), environment-friendly products;2, Powerful Hinges;3, Modified PP, Injection moulding, excellent protection against tough environment.4, Customized ...