PORTABLE PROTECTIVE CASE IS MADE OF POLYCARBONATE STRUCTURE FOR LONG LASTING DURABILITY. WATERPROOF AND CRUSHPROOF MICRO CASE PROVIDES SECURE PROTECTED STORAGE OF SMALL ELECTRONICS CELL PHONES PHOTOGRAPHIC CAMERA RADIO AND VALUABLE SMALL ITEMS. RUBBER LINER FOR EXTRA PROTECTION DOUBLES AS O-RING SEAL. AUTOMATIC PRESSURE EQUALIZATION VALVE - BALANCES INTERIOR PRESSURE KEEPS WATER OUT. STAINLESS STEEL HARDWARE. CARABINER. WATERTIGHT CRUSHPROOF AND DUSTPROOF. CASE IS ABLE TO BE SUBMERGED UNDER 1 METER OF WATER FOR UP TO 30 MINUTES IN ACCORDANCE WITH IP67 TESTING PARAMETERS. EASY OPEN LATCH.