Plyometric boxes or jump boxes are used for athletic training and exercise. Athletes jump on these boxes that come in different heights to train jumping power or explosiveness. Depending on the weight of the individual, these boxes are exposed to 50 to more than 100 kilograms of dynamic force. A plyometric box that is unable to handle these forces can come apart and can cause injury.
There are many kinds of materials used for plyometric boxes. There are foam, plastics, metal and wooden boxes. The metal boxes are the most durable. However, a mistimed jump can end up with the shin hitting the box. This can really hurt a lot and lead to a serious injury.
The metal boxes are also quite heavy which can be problematic if you have a small workout space as it will require quite a bit of moving. The plyometric boxes that are made of foam or plastics are the safer way to go. They are also the most expensive ones and the forces that they are constantly exposed to can cause the material to deform.
This brings us to the wooden boxes. Wood is not the most durable or softer material. However, with polyurethane adhesives and proper bonding, the boxes can be made to withstand all the forces you create when jumping on it. Plus, it is must lighter than metal and can easily be added with cushioning to keep you safe.