Premium Material: Vevor heavy duty protective dry box case is made of polycarbonate PP, making it extremely strong and durable, makes it ideal for a variety of uses and environments,for whatever you need to safeguard. IPX67 Test Report: Vevor waterproof hard case have passed international IPX67 test report，The O-ring seals and automatic pressure equalization valve design ensure your items stay safe even in water, allowing you to enjoy water activities worry-free.