The Vertex Standard EVX-531 Radio Case by Case Club safely holds up to 28 radios. The case focuses on the Vertex Standard EVX-531 two way radio. It comfortably holds 28 radios and antennas. It was designed by professionals for professionals. The foam is strong, durable military grade polyethylene which is oil proof so if it gets dirty simply wipe it clean. The case itself is waterproof, dustproof, shippable. Single purge valves keeps the moisture out while allowing the case to be opened in high or low altitude. Like most Case Club cases the case is guaranteed for life.