Fortunately, there are plenty of metal dog crates that have been designed to fold easily for quick breakdown so that owners can take them wherever they go. (topdogtips.com)
Material — I offer leather, nylon and metal dog collars. (fordogtrainers.com)
Aluminum is ideal for metal dog crates: lightweight, strong, rust - proof, and it reflects the sun's heat - a definite plus for traveling with your dog. (bestdogcrate.com)