Gabion cages are constructed from high quality steel wire, which is usually heavily galvanized in order to provide long-term corrosion protection. If you plan to use gabion cages in more aggressive natural environments, they can also have a polymer coating applied for further protection. 

Welded mesh gabion cages are also an excellent example of gabion cages and tend to be stronger than traditional woven wire cages. Occasionally, these cages are the preferred style for landscapers that are undertaking work without contractors, as they are fast to assemble, simple to install and do not require any tensioning work. Somewhat akin to gabion baskets, high quality gabion cages are often preferred to the former option, as they are less likely to buckle when filled. Though baskets are an equally viable option, gabion cages are extremely useful for landscaping features that need to be sturdy.