Pelican cases, the best known hard shell case brand, are injection molded from plastic. They come in a variety of sizes, and have optional handles and/or corner casters. They are available either online or from an authorized Pelican Dealer such as Larson Packaging Company (LPC).
ATA cases are made of rigid panels and aluminum extrusions which are riveted together. ATA cases are custom built, and the most common form is the road case which opens like a trunk and is used by musicians.
Both types of cases provide excellent protection for transporting valuable or fragile equipment repetitively and can be used for more than 100 trips. This makes either case the lowest cost packaging on a cost-per-trip basis when compared to a corrugated box or crate. While the case will provide protection against exterior impacts, the internal protection for your equipment will come from standard or custom foam cushioning. The correct type, amount, and density of the foam should be specified, designed and fabricated by an expert.