The 3i-1309-6GP4 features a dual layer custom cut foam interior that will accommodate four GoPro cameras up to the Hero 4 version and includes a storage compartment for accessories as well as slots for batteries. The 3i-1309-6GP4 GoPro Case features a lower layer for accessory storage. The foam interior is constructed of a high quality Stratocell foam with a contrasting red capped Cellu-cushion foam top. iSeries injection molded waterproof cases are constructed of ultra high-strength polypropylene copolymer resin and feature a gasketed, waterproof and airtight, submersible design (IP67) that is resistant to corrosion and impact damage. Its molded-in hinges, patented " mini trigger release" latch system, comfortable, snap-down rubber over-molded cushion grip handle, secure stacking, and automatic ambient pressure equalization valve (MIL-STD-648C) all contribute to its military grade design - Custom foam interior to hold four GoPro cameras up to the Hero 4 - Ultra high-strength polypropylene copolymer resin - UV, solvent, corrosion and fungus resistant (MIL-STD-810F) - Complete gasket seal makes these cases absolutely watertight (MIL-STD-C-4150J) - Automatic ambient pressure equalization value (MIL-STD-648C & IP67) - Resistant to corrosion and impact damage - Molded-in hinges - ”Patented " mini trigger release" latch system - Rubber over-molded cushion grip handle - Locking loops for customer supplied lock