The PL1720 Case is unbreakable, watertight, airtight, dust-proof, chemical resistant and corrosion proof. These are some of the features of this Pelican Protector Case that offers total; protection for your equipment. It is made of Ultra High Impact structural co-polymer that makes it strong and durable. Its exclusive 1/4" (6.4 mm) neoprene o-ring and ABS latches seal perfectly and includes an automatic purge valve for quick equalization after changes in atmospheric pressure. It has transport wheels for better handling. Your equipment can fit into the high density foam of the case for total subjection and protection against impact, vibration or shock. A nameplate (included) can be personalized (engraved at additional cost). This case is NATO codified and tested to MIL C-4150J (Military Standard), IP-67 (Ingress Protection) and ATA (Air Transportation Association). Case comes with an Unconditional Lifetime Guarantee of Excellence.