The SKB 2r Series Cases are designed to meet military specifications. These MIL-STD Shipping Cases are Strong, Durable, Waterproof and Airtight. Need a Heavy-Duty Case that will withstand the most demanding shipping conditions? These Cases will NOT let you down. Roto Molded of (LLDPE) polyethylene impact resistant / UV stabilized material and meet or exceed MIL-STD 810 and MIL-C-4150J specifications. ATA Rated Cases with Built-in Wheels or Casters and Tow Handle for ease of transporting. Choice of Layered Foam or Empty Interior. Colors include: Black, OD Green and Desert Tan. Includes Million Mile Warranty.