Professional protection: sturdy & waterproofEfficient Storage Set-upWaterproof IP67The case has a waterproof rating of IP67 (which means a closed case can go 1 meter underwater without water coming in)Impact & Temperature Resistant, Corrosion ProofThe case is made from engineered plastic injection molding, which is strong and durable. It can withstand temperatures of -25 to +60 degrees and for a short duration even -40 to +80 degrees.EVA shock-proof Lining offers Increased protectionThe CNC-engineered, high-quality EVA lining offers a snug fit and ultimate protection.Easy and Safe to Open During Altitude and Temperature ChangesIt's equipped with a pressure balance valve to prevent unwanted vacuum sealing (or bursting when opening) caused by air pressure differences due to temperature and altitude changes inside and outside the box.