The better shipping cases are high quality shipping containers that are water proof, dust proof, virtually destruction resistant and are also reasonably priced. The following 6 Problems occur frequently when shipping or transporting equipment or other items.

Problem 1 - Changes in altitude during travel result in increased or decreased ambient air pressure. Cases that are airtight will develop a vacuum as the pressure decreases making it nearly impossible to open the lid of the case.

Solution 1 - Some cases incorporates a GoreTex membrane in their purge valve. Because air molecules are smaller than water molecules the pressure can equalize without water molecules passing the barrier keeping the contents dry.

Problem 2 - Thieves find it easy to clip the rotomolded plastic along the locking ring of the lid to base connection. A simple pair of snips can often do the job.

Solution 2 - The locking ring of the case is encased in steel so that a thief cannot simply clip off the molding to open the lid.

Problem 3 - Create a lid latch that is strong, simple and easy to open.

Solution 3 - The double throw latch. Springs can corrode, latch tabs can burst, and wimpy push button latches can become jammed with mud. Even if the case is not intended for extreme environments, the latch pretty much determines the usefulness of the case. Pelican introduced the "C" clamp double throw latch almost 28 years ago. The integrity of the original design remains, but a secondary lever provides ample leverage to release it.

Problem 4 - How do you create a dependable watertight seal on a case?

Solution 4 - The tongue and groove mate between the lid and the case insures proper alignment of the o-ring. Periodic inspection and lubrication is required the maintain the watertight functionality.

Problem 5 - How do you make a case very strong, yet also very light?

Solution 5 - Pelican uses an expanded polypropylene closed cellular structure in its case walls. By putting foaming agents in the molding process the highest strength/weight ratio is available.

Problem 6 - How do you make reliable lid organizer and accessories attachments?

Solution 6 - Inside the lid of many of the larger cases are molded in place screw bosses for accessory attachment. Drilled to the specified depth they provide a means of physical attachment that is solid a reliable