The best protective case brand in the world. Custom foam: two layers of custom foam in the base and one layer of custom foam in the lid are specially designed for Spark Combo and offer the most comprehensive protection with easy access to all accessories and prevent lost items. Crushproof, dustproof, extreme temperature resistant, drop, vibration and impact-resistant: compliant with DEFSTAN 81-41/STANAG 4280, MIL C-4150J, ATA 300. Watertight: IP67, up to 1 meter of submersion. Automatic pressure equalization valve: balance interior pressure and keep water out. Stainless padlock protector: provide extra security against cutting and theft.